—— I dropped in on you at about four, p.m., but you didn’t answer the door.
—— Oh, that was probably _________ I was playing badminton in the stadium nearby.
A. that B. what C. when D. why
Apple Inc, __________ the way we communicate with its smartphones, released the Apple Watch on March 9, 2015 in San Francisco, US.
A. changing B. to change
C. changed D. having changed
According to the regulation of Education Ministry, a full-time middle school or primary school _______ hold a flag-raising ceremony once a week, except during vacations.
A. shall B. should
C. need D. can
Stephen William Hawking, the writer of A Brief History of Time, is always being _______ as a model of strong will.
A. taken up B. held up
C. picked up D. kept up
The hurricane ruined my vacation early this morning, otherwise I _____in Hawaii sunbathing on the beach at the moment.
A. should have been B. might have been
C. would be D. am
A powerful earthquake struck Nepal in South Asia on April 25, 2015, _______ government appealed for assistance from the international community.
A. where B. which C. whose D. when
