Theresearchmainlydealswiththed

The research mainly deals with the difficulty the students have ______ their attention pm their study all the time.

A．to focus

B．to be focused

C．focusing

D．focused

登录免费查看答案和解析

相关试题

I'll be home late, but please don't stay ____ for me.

A．up

B．in

C．over

D．on

收藏答案/解析

____ the temperature falling so rapidly, we couldn't go on with the experience.

A．Since

B．With

C．As

D．For

收藏答案/解析

He was in hospital for six months.He felt as if he was ______ from the outside world.

A．cut out

B．cut off

C．cut up

D．cut through

收藏答案/解析

My father ______ my brother for driving but he wanted to pick ______ the knowledge of the computer during his spare time.

A．advised;up

B．persuaded;out

C．intended;up

D．managed;out

收藏答案/解析

“How long have you worked on the farm?” “_________ the end of last year.”

A．In

B．By

C．At

D．Since

收藏答案/解析