[ Grammar ]
(Tom / participate) _________________________ in “Green Summer” program before?
A. Has Tom participate
B. Tom has participated
C. Did Tom participate
D. Has Tom participated

Random Topics:
Grammar - FragmentsModals for ObligationLinking Words and PhrasesNounVerb-ing and InfinitiveDirect and Indirect SpeechDescriptionsInfinitiveHelpful Phrases Present, Past, Present Perfect and ComparativeOther quiz:
Grammar › ViewAvoid_________________ silly mistakes.
A. making
B. to make
C. makes
D. made
Homonyms › View
The burglar stowed his ___ in a large canvas duffel bag.
a. loot
b. lute
They ________ their car at our disposal for our entire stay.
A. had
B. took
C. put
D. got
Grammar › View
That pencil is not _________, it’s mine.
A. You
B. Your
C. Yours
D. You’s