What _____?(   )

A．happened

B．happen

—_________ you _________ your neightbour last weekend? (   )
—Yes, I _________ him walk the dog.

A．Did; help; help

B．Do; helped; helped

C．Did; help; helped

My dog helped the blind man ______ . （   ）

A．last week

B．tomorrow

C．now

He ____ a video ____ his space travel. (   )

A．made, at

B．made, about

C．make, about

用所给动词的适当形式填空
1.  Lucy  __________ (come) to China last month.
2.  She watches TV every evening. But she ___________ (not watch) TV last night.
3.  Mary __________ (read) English yesterday morning.
4.  There _________ (be) no one here yesterday.
5.   I ___________ (call) Mike this morning.
6.  I listened but ___________ (hear) nothing.
7.  Tom ___________ (begin) to learn Chinese last year.
8.  My mother ________________ (not do) housework yesterday.