[ Tenses ]
The students ______ attentively to the lecturer when a phone rang.
A. listen
B. are listening
C. have listened
D. were listening

Random Topics:
Grammar - much, many, a lot ofInterrogative PronounsCommon ErrorApostrophe GrammarCohesive DevicesPast Perfect SimpleCountable & Noncountable NounsPossessive Nouns with Apostrophes and PronounsFrequency AdverbsSecond Type ConditionalOther quiz:
Grammar › ViewThe baby usually ______ at 9.00 p.m. every night.
A. sleep
B. sleeping
C. sleeps
D. slept
Grammar › View
______ we order some chicken?
A. Should
B. Must
C. Should not
D. Have to
Grammar for TOEFL › ViewThe great digital advances of the electronic age, such as integrated circuitry and a microcomputer, has been planted in tiny chips.
A. great digital
B. circuitry
C. has
D. planted
Grammar › View
Make a list of countries _____ population is greater than 20 million.
A. that
B. whose
C. which
D. who
