Melting snow made the air wet and the lack of winds led the wetness in the air to thicken, thus ________ the fog．

A．caused

B．having caused

C．to cause

D．causing

I believe that all students in Senior Three ________ the day when they are admitted into their dream universities．

A．go through

B．dream of

C．blow up

D．join in

The tickets for the show have all been sold out．In other words, the tickets are not ________ now．

A．accurate

B．accessible

C．acceptable

D．available

So far, no conclusion ________ in which type of exercise is best suitable for keeping fit．

A．has reached

B．has been reached

C．was reached

D．had been reached

A draft regulation on school bus safety management was made public by the State Council, with the public ________ to give comments．

A．to invite

B．inviting

C．invited

D．having invited

Between the two books ________ the photo album you are looking for．

A．are

B．is

C．has

D．have

I just wonder ________ that you don't want to cooperate with me．

A．why it does

B．what it does

C．how it is

D．why it is

Don't mention that at the beginning of the story, or it may ________ the shocking ending．

A．give off

B．give out

C．give up

D．give away

Not a single book is allowed ________ out of the reading room according to the new rule．

A．to take

B．taking

C．to be taken

D．being taken

The professor said that he was interested only in research; he didn't ________ others’ comments．

A．care about

B．come about

C．bring about

D．get about