
[ Vocabulary ]
Scientists think that wild animals must ____________ in their natural habitats.
A. keep
B. to keep
C. be keeping
D. be kept
Each or EveryPresent Perfect Continuous Tense Sit vs. SetGrammar (either..or.. and neither..nor..)Simple Past Tense and Present Continuous TenseSimple Present Negative and QuestionAdjective + to + VerbConjunctions and PrepositionsPresent Simple Tense Passive
Other quiz:
Grammar › ViewHe’s very rich __________ he doesn’t spend a lot of money.
A. And
B. But
C. Or
D. So
Grammar › View
I asked for …… bread and …… cheese.
A. the / the
B. a / a
C. the / zero article
D. zero article / zero article
How to use : Read the question carefully, then select one of the answers button.