_________ in the war, many children have become orphans(孤儿)．

Their parents were killed

Being killed

Their parents killed

Killed

Hard _________ he tried, he failed to catch up with the first runner．

although

as

while

when

I _________ through that bitter period without your generous help．

didn’t go

hadn’t gone

wouldn’t go

couldn’t have gone

Tom is _________ to miss the early bus because he got up late．

possible

probable

likely

maybe

I’d like to take _________ of this opportunity to thank you for your help．

advantage

case

use

care

Most people would agree that nuclear science should be developed to benefit the human being _________ harm them．

more than

rather than

other than

better than

Not until the early years of the 19^th century _________ what heat is．

man did know

man knew

didn’t man know

did man know

_________ food is stored deep in the tunnel for the use of war．

A great many

A large number of

Scores of

A large amount of

_________ she couldn’t understand was _________ fewer and fewer students showed interest in her lessons．

What; why

That; what

What; because

Why; that

She looks forward every spring to _________ the flower-lined garden．

visit

paying a visit

walk in

walking in