1 . From the ____look on his face, I knew that it would make no sense ___ to persuade him any more.

A．determining; to try

B．determining; trying

C．determined; trying

D．determined; to try

2 . Robert often asks us ________ his Chinese, so his Chinese is much better than before.

A．help him

B．to help him with

C．to help with

D．helps him with

3 . Yuan Longping is the first agricultural pioneer ________ hybrid rice.

A．to grow

B．grow

C．grew

D．growing

4 . ---Tom enjoys _____ basketball on Sunday afternoons, doesn’t he?
---Yes, he does. But what his sister enjoys _______.

A．to play, dancing	B．playing, to dance
C．to play, to dance	D．playing, is to dance

5 . －You don't seem ________ any experience in sales, do you?
－Well, you see, but I have contact with marketing, which is helpful.

A．having

B．to have

C．to having

D．to be having

6 . - Why not tell her the truth?
- I meant ________, but I was too busy.

A．to do

B．doing

C．to doing

D．to

7 . I’m glad ________ you.

A．meet

B．meeting

C．to meet

D．met

8 . Mr. Feintuch used a personal and expensive trial-and-error approach to ______ up with three products that seemed to work for him.

A．coming

B．come

C．came

D．have come

9 . It is acknowledged that he is too busily occupied ________ to the show tomorrow.

A．to go

B．going

C．with going

D．in going

10 . Mary became a baker at age 14, because her grandfather paid the local baker ________ her all the skills.

A．to have taught

B．to teach

C．teaching

D．having taught