With no one to ________ in such a frightening situation, she felt very helpless．

turn to

turn on

turn off

turn over

Please tell me how the accident ________, I am still in the dark．

come about

come by

come to

come up

Don’t respond to any e-mails ________ personal information, no matter how official they look．

searching

asking

requesting

questioning

When asked by the police, he said that he remember _________ at the party, but not ________．

to arrive; leaving

to arrive; to leave

arriving; leaving

arriving; to leave

Could you please tell me where you bought the shoes you ________ yesterday?

tried on

put on

had on

pulled on

Allow children the space to voice their opinions, ________ they are different from your own．

until

even if

unless

as though

Allen had to call a taxi because the box was ________ to carry all the way home．

much too heavy

too much heavy

heavy too much

too heavy much

Be careful when you cross this very busy street．If you not, you may ________ run over by a car．

have

get

become

turn

The electricity and water have been cut of．They ________ be in the flat．

can’t

mustn’t

needn’t

shouldn’t

My grandpa was in the Red Army, and he ________ the Long March．

joined

attended

took part in

took