1. It's (believable) that he can climb the tree in two minutes because it's so tall.

⑤We have been to the amusement park twice.(对画线部分提问) 

  have you been to the amusement park?

④ —Where is our teacher?

- He his hometown to see his mother.

   A. is going to   B. has gone to

   C. has been to   D. was going to

② He never  ( fight ) with his classmates.

③ They (be) to Australia three times.

①Have you ever ( travel) to another province?

② Her (encourage) made me very happy.

① The teachers often encourage him hard.

   A. study   B. studies

   C. to study   D. studying

encourage的用法

(1) encourage为 (动词，名词) ，意为“鼓舞;鼓励”。encourage sb. to do sth.意为“鼓励某人做某事”。

(2) encourage 的名词形式为 encouragement ,意为“鼓励”。

② 如果你想取得很大的进步，你必须拼尽全力。

If you want to , you must try your best.

① 这项工作进展迅速。

The work is rapidly.