It’ s suggested by experts that teenagers ____at least 30 minutes exercising, five times a week.
#87174
A
spend
B
to spend
C
spent
D
have spent
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The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow.
#90566
A
should
B
must
C
will
D
can
I apologize if I _______ you, but I assure you that it was unintentional.
#86712
A
should offend
B
were to offend
C
had offended
D
offended
I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.
#90502
A
should have been doing
B
must have been doing
C
could have done
D
would have done
Students urged that the school library ______open during the long vacation.
#87054
A
be kept
B
kept
C
must keep
D
must be kept