[ Vocabulary & Grammar ]
They spend a lot of time doing ___.
A. experiments
B. experiment
C. experimentations
D. experimenting
Select your answer:
Random Topics:
Present Perfect Continuous TenseFuture Tense (will/be going to/p.continuous)Verb + InfinitiveNoun Phrases and Verb PhrasesPast Tense vs Present Perfect TenseLinking WordsSimple Past Future TenseConditional SentencesPassive Voice - Past SimpleGrammar - Collective NounsOther quiz:
Linking Words and Conjunction › ViewIdentify conjunctions: He can’t go out until he does the dishes, since it’s his turn.
A. go, until
B. until, since
C. does, since
D. go, does
Grammar › View
Carry ….. talking, please. We want to hear more.
A. on
B. of
C. with
D. to