You must concentrate _____ your study not on your clothes.
A. on B. with C. in D. to
There are so many beautiful clothes in the store. I really don’t know _____.
A. what to choose B. how to choose
C. when to choose D. which to choose
We all know the _____ of learning English well.
A. important B. importance
C. different D. difficult
The room must _____ up right now. It’s too dirty.
A. be cleaned B. be cleaning
C. clean D. cleaned
, the rain stopped when we went out for a walk.
A. Lucky B. Luck C. Luckily D. Luckless
The old man lived but he didn’t feel .
A. alone; lonely B. alone; alone
C. lonely; alone D. lonely; lonely
