When the teacher ______ how to do the experiment, the bell rang.
#37863
A
explains
B
will explain
C
was explaining
D
is explaining
推荐题目
Tom often makes his brother___but yesterday he was made___ by his brother.
#42374
A
cry; to cry
B
to cry; cry
C
cry; cry
D
to cry; to cry
—Where’s her second son? I haven’t seen him for a long time. —He _______ Maine looking for a place to work.
#42776
A
will go to
B
has gone to
C
had gone to
D
goes to
—What is the weather like this summer here?—There ________ very little rain.
#41641
A
has
B
has been
C
are
D
have been
