1.      Gravity makes water (run) ______________ downhill.

2.      Sad movies always make me (cry) ____________.

3.      It’s difficult (get) ____________ used to (eat) _____________ with chopsticks.

4.      Stop (argue) __________ and start (work) ______________.

5.      I used (swim) _____________ in the river.

6.      He warned her (not /touch) ______________ the wire.

7.      He is too busy (take) ______________ care of her.

8.      It takes me hours (write) ______________ the letter.

9.      He gave up (smoke) _____________ years ago.

10.  (look) _______________ at me and (answer) ______________ my question.

11.  He told me (try) ____________ (come) ____________ early.

12.  Is there anything worth (buy) ____________?

13.  I enjoy ___________________ (listen) to music