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(   ) 2. ―-Mike,I have to tell you that I will use my bike tomorrow.

      --Don't worry about that! I______________ to return your bike on time.

A. promise          B. keep

C. ask             D. improve

(   ) 1. ―How will you spend your summer vaca?tion?

―My mother___________ to take me to Mount Huang three days ago.

A. asked            B. promised

C. answered          D. moved 

8.   I think the young man_____________________ succeed.

7.   They _________ not _________   finish the work last time.

6.   You will ____________________  dance well in two years.

5.   She hopes to____________________ find the differences between the two cars. .

 根據(jù)句意，用be able to的適當(dāng)形式填空。

4.   The kid____________________   walk when he was ten months old.

(   ) 3. Bob is a clever boy. He___________ swim when he was six years old.

A. can          B. was able

C. can't         D. was able to

(   ) 2. ― ―_____________you play the guitar at the age of 11? 

      —Yes ？ I could. I believe I will _____________play better in the future.

A.  Can ; be able to

B.   Could;be able to

C.   Were able to;could

D.  Could;could

(   ) 1. I am sorry that I_______________  able to phone you yesterday.

A. can         B. can't

C. was         D. was not