[ Past Modals ]
The movie theater _______________ full because there were still tickets for sale.
A. could have been
B. must not have been

Random Topics:
Must Vs Have toPreference & Future TenseAdverbs and Time ExpressionsPassive Voice - Present Simple and Past SimplePresent Perfect Simple and ContinuousPast Simple, Past Continuous, Past Perfect, Past Perfect ContinuousGerund Subject or ObjectPast simple - Irregular VerbsThe Present Progressive TenseTenses and QuestionsOther quiz:
Modals › ViewWhich sentence uses a modal verb to show possibility?
A. She can swim very fast.
B. He will finish his homework.
C. They must leave now.
D. It might rain tomorrow.
Grammar › View
Drivers can see the yellow buses ….. far away.
A. with
B. to
C. in
D. from
Grammar › ViewDid you …… in the Mt Bromo yesterday?
A. Go
B. Goes
C. Went
D. Gone
Vocabulary and Grammar › View
He is driving so fast: he may endanger other_______.
A. means of transport
B. road users
C. zebra crossing
D. railway station
