(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:
Linking Words & Phrases › ViewGlobal warming is a prominent issue these days ……………… it has a direct impact on the climate of countries all over the world.
A. due to
B. owing to
C. because
D. but
First Conditionals › View
In the following sentence: “Don’t be selfish if you see someone who needs help”, what grammar tenses are being used?
A. Simple present and Simple present
B. Imperative and Simple present
C. Present continuous and Simple present
D. Modal verb and Simple present
Vocabulary and Grammar › ViewThey ________ 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