[ Present Perfect ]
when you use present perfect you select
A. based verb form
B. infinitive verb
C. past
D. past participle verb
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Homonyms › ViewThe world champion golfer designed a new golf ___.
a. coarse
b. course
Grammar and Vocabulary › View
Choose the best option to fill in the gap: I believe that the only way for us to reduce global warming is to cut down ___________ energy use.
A. in
B. on
C. to
D. at