Most advanced aircrafts now —- at supersonic speeds.
A. could have fly
B. are able to fly
C. had to fly
D. were supposed to fly
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AbilityModal, Causative Verb & Elliptical StructureShould, Should not haveConjunctions in Complex SentencesModals, Infinitives and GerundsGrammar - Compound SentencesUnderstanding Product Packaging and TensesPerfect TenseFuture Simple TensesAdverb PhrasesOther quiz:
Grammar › Viewthe spread between the lowest and the highest notes that a person can speak comfortably
A. rover
B. ranger
C. range
D. roper
Grammar › View
Phuong started to study English when he was in secondary school, and he still studies English.
A. Phuong was studying English when he was in secondary school.
B. Phuong studied English in secondary school.
C. Phuong has never studied English.
D. Phuong has studied English since he was in secondary school.
Grammar › ViewBefore I went to bed, I (lie, lay, laid) my clothes out for the morning.
A. laid
B. lay
C. lie
Grammar › View
‘I’m doing my homework a the moment.’
He said that he ……….. at the moment.
A. Done his homework
B. has been doing his homework
C. was doing his homework