[ Countable - Uncountable ]
The famous scientist is conducting ___ experiment to prove his theory.
A. an
B. some
Random Topics:
Past simple - Irregular VerbsPrepositional PhraseGrammar: is/are/was/wereas...as, comparatives, superlativesFrequencyTenses & AffixesParticiple - ing/ edPast Tense vs Present Perfect TenseRelative & ModalsPassive Voice - Present ContinuousOther quiz:
Vocabulary › ViewThe television is the old man’s only source of ____.
A. entertain
B. entertaining
C. entertainment
D. entertained
Grammar › View
what is the correct abreviation for October?
A. Oct.
B. Octo.
C. Octob.
D. Octtob.
Grammar & Vocabulary › ViewI don’t _____ my homework, Can you help me?
A. believe
B. understand
C. know
D. do
Grammar › View
It _____________________________ for three weeks, so the land was dry.
A. has been raining
B. hadn’t rained
C. had been raining
D. was raining