[ Present Perfect ]
when you use present perfect you select
A. based verb form
B. infinitive verb
C. past
D. past participle verb

Random Topics:
Simple Present - WH Questions1st and 2nd ConditionalsAnalogyComparative AdverbClauses and GerundsGerund and To InfinitivePassive Voice, Modals of Deduction and First ConditionalGrammar MistakesFuture Simple TenseSimple Present vs Present ProgresiveOther quiz:
Passive Voice - Present Tenses › ViewMany sports injuries ____ by physiotherapists.
A. are treated
B. treats
C. treated
D. are treating
Grammar › View
I really enjoy ___________ tennis with my sister.
A. to play
B. playing
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
