While Ann ___ TV, her father came home.
#41786
A
is watching
B
was watching
C
watch
D
watches
推荐题目
--Could you tell me when Mr. Li ______ in Beijing?--Sure. When he _____, I ’ll call you. 
#36954
A
arrives;will arrive
B
will arrive; arrives
C
arrives; arrives
D
will arrive; will arrive
By the time I was five, I          learning English.
#39666
A
had started
B
have started
C
started
D
have been