Page 46 - Grammar for Great Writing B
P. 46

ACTIVITY 2


           Fill in the blank with the correct present perfect form of the verb in parentheses. Use not when it is
           given. Be ready to explain why the present perfect is used.

             1. Tonight’s lecture will explain why many children                                (become)
              obese.

             2. Since its independence in 2011, South Sudan                                   (face)
              a number of both national and international difficulties.

             3. The health professionals in that program                                 (not, persuade) many

              patients to eat better or exercise more.

             4. This law                                   (do) very little to reduce crime.

             5. In recent economic reports, some leaders                                   (suggest) that
              interest rates will rise.

             6. Scientists do not know what                                   (cause) the recent decrease in

              the honeybee population.

             7. The province of Quebec                                    (vote) twice on whether to separate
              from Canada to become an independent country.

             8. There are several reasons why the economy                                    (not, grow)
              over the past five years.

             9. Michael Phelps                                    (win) more gold medals than any other

              Olympic athlete.

             10. Chocolate arrived in Europe around 1550, so Europeans                                 (know)
              about chocolate for almost 500 years.


























           36  Unit 3  Writing with the Present Perfect


                 Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).
                 Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).
               Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
               Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
                    Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part.  WCN 02-200-203
   032-043_18606_GGW_SB_B_U3.indd   36                                                                           12/14/16   2:53 PM
   41   42   43   44   45   46   47   48   49   50   51