At the discussion, Jack ________ an idea that they should bring down the price of the cars．

came about

came up for

came out

came up with

－Why hasn't Mike turned off the light?

－Oh, he fell asleep ________ the light on．

for

in

with

to

In the botanic garden we can find a(n)________ of plants that range from tall trees to small flowers．

species

group

amount

variety

________ Jane and Robert had enough sense of humour!

What

What if

Even though

If only

When a pencil is partly in a glass of water, it looks as if it ________．

breaks

has broken

were broken

had been broken

－Did you remember to give Mary the money you owed her?

－Yes．I gave it to her ________ I saw her．

while

the moment

suddenly

once

－Sorry, sir．I can't answer the question．

－Well, you are supposed ________ the part of history．

to read

having read

to be reading

to have read

He ________ often go to play near the small river, when he was young．

used to

would

could

might

I often see lights in that empty house．Do you think I ________ report it to the police?

should

may

will

can

Mr．Bush is on time for everything．How ________ it be that he was late for the opening ceremony?

can

should

may

must