Tom is very happy in China during this period because his Chinese ________ every day. 
#99725
A
has improved
B
is improving
C
improved
D
is improved
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 Stay awake! You should know that it ________ to sleep in class.
#100994
A
doesn’t permit
B
is not permitted
C
will not be permitted
D
was not permitted
— You were late again, Peter.—Sorry, I ______ to be here on time, but the traffic on the roads _____ heavy.
#99977
A
wanted; was
B
had wanted; was
C
wanted; would have been
D
had wanted; would have been