欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

I don’t know ______ with this problem. It’s too hard.

A. which to do B. when to do

C. what to do D. how to do

The river is too wide for the swimmers _______________.

A .to swim B. to swim in

C. to swim across D. swimming

When I was in the USA,I had difficulty ______ English, so I often ask Paul ____ help.

A. to understand, with B. understanding, for

C. to understand, for D. understanding, with

---How many students have visited the West Lake? ---________.

A. No one B. Nothing

C. None D. Nobody

Mom was cooking ________ Dad was reading newspapers.

A. as B. when

C. while D. since

Li lei’s words made her _______.

A. happily B. angrily

C. crying D. angry

I can______ you my dictionary，but you can______ it for only a week．

A. borrow, return B.1end, borrow

C.1end,keep D.1end, return

There____ a football game on TV this afternoon .

A. will be B. is going to have

C. is going to play D. will play

If there are ______ trees, the air in our city will be _______ cleaner.

A. less, more B. more, more

C. more, much D. much, more

----I feel tired and sleepy. -----Why not stop _______ ?

A. resting B. relaxed

C. to relax D. relaxing