All passengers ________, please fasten your seat belts and remain seated ________ the plane is landing．

on board; until

abroad; since

on the board; before

aboard; when

He ________ busy then; otherwise, I believe, he would have given you a hand．

had been

were

must be

was

It is not like Mr．Smith, who is a gentleman, ________ his wife so rudely．

to treat

treating

should treat

treated

As the saying ________, ________ who laughs last laughs best．

says; who

goes; he

goes; who

puts; one

An increasing number of people enjoy sun-bathing, but experts warn that too much ________ of the body to strong sunlight is harmful．

access

exposure

resistance

touch

－Thank you for the trouble you ________ to fix my computer．

－________!

took; Don't mention it

caused; You're welcome

made; With pleasure

spared; It doesn't matter

Guess what?I ran into a good friend of mine from ________ I was at kindergarten just now!

how

whom

when

which

________ you kept your mobile phone on in such an important exam?It's against the school regulation．

How dare

How come

How about

What if

He is a man of few words, but he ________ be talkative sometimes．

shall

must

can

would

“I'd like to express my thanks to those ________ help my husband would have been killed in the accident” said the woman on TV．

who

with their

with whose

without whose