20．My father ________ TV at eight o'clock yesterday evening．

A．was watching         B．is watching          C．watched                 D．washes

19．Yesterday，a girl said she saw _______ UFO in the park．The police are looking for _______ UFO now．

A an，the                  B．the，the              C．a，the                   D．the，an

18．When I walked ________ the station，I saw an accident ________．

A．past，to happen                                      B．passed，happened

C．past，happen                                             D．passed，happen

17．My mother cut her finger when she ________ a dress．

A．made                   B．is making             C．was making            D．makes

16．--Could you look after my son for me while I’m away?

--________

A．Pardon?               B．You’re welcome     C．Yes，please            D．With pleasure

15．We really don't know ________．Could you help us?

A．how to do            B．what to do                  C．to do what              D．to do how

14．--I have no money to go camping．What should I do?

--________ you could get ________ part-time job to get some money．

A．Why，a              B．May be，／         C．Maybe，a              D．Sure，／

13．Sorry，you speak ________ quickly________ I can't follow you．

A．too，to               B．so，that               C．as，to                    D．very，as

12．I think I should ________．

A．call up him            B．call in him                  C．call on him             D．call him up

11．--Could I borrow your bike?

--Yes，of course you ________．

A．must                   B．can                      C．will                       D．need