While Helen ________ the piano，her mother came in．
#39922
A
was playing
B
is playing
C
played
D
plays
推荐题目
A: Alice, please tell Eric to call me when he _________ back. B: No problem.
#41713
A
come
B
comes
C
came
D
will come
Tom wants to be a singer and he_____ singing lessons to do it.
#39114
A
took
B
has taken
C
is taking
D
was taking.
Yesterday the teacher told us that the earth ________around the sun.
#41492
A
moved
B
moves
C
was moving
D
had moved
It is Sunday today. Lily and Lucy ________ in the park
#42220
A
is playing
B
playing
C
plays
D
are playing