— There used to be lots of fish in the lake.
— Yes, but there are very __________ now.
| A．few | B．fewer | C．little | D．less |
-- __________ you ________ your book to the library?
-- Yes. I returned it yesterday.
| A．Did, return | B．Have, returned |
| C．Will, return | D．Do, return |
The missing boys were last seen ______ near the river.
| A．to play | B．play | C．to be playing | D．playing |
I’m going to look for another job ________ the company offers me more money.
| A．after | B．unless | C．When | D．for |
-- _______ do you write to your parents?
-- Once a month.
| A．How long | B．How soon |
| C．How often | D．How far |
– When shall we meet again next week?
-- _______ day is possible. It’s no problem with me.
| A．Either | B．Neither | C．Every | D．Any |