About ________ of the students in our class have already gone to the mountain village．

A．second fifths

B．two fifths

C．two fifth

He was ________ sad at the bad news that he couldn't help crying．

A．so

B．very

C．too

________ noisy kids! Please ask them to keep quiet．

A．How

B．What

C．What a

Jenny, ________ 18-year-old girl, will give us a talk tomorrow．

A．/

B．a

C．an

从所给A、B、C三个选项中，找出和画线部分意思相同或相近并能替换画线部分的选项。

We should do our best to improve the environment．

A．keep the environment

B．make the environment worse

C．make the environment better

从所给A、B、C三个选项中，找出和画线部分意思相同或相近并能替换画线部分的选项。

If he is tired, he can stay at home and relax himself．

A．drink some water

B．have a rest

C．work on

从所给A、B、C三个选项中，找出和画线部分意思相同或相近并能替换画线部分的选项。

Please give up smoking．

A．stop to smoke

B．stop smoking

C．go on smoking

从所给A、B、C三个选项中，找出和画线部分意思相同或相近并能替换画线部分的选项。

He worked out the math problem in the end．

A．at last

B．at the end

C．final

Follow me, please．Or you may ________ your way in the forest．

A．miss

B．lose

C．take

Although trying his best, he still couldn't ________ Jesse, who is the best in the class．

A．come up with

B．make up with

C．catch up with