用括号内所给单词的适当形式填空。

1. Think it over before making an important _______(decide).

2. —How much did the new watch cost your sister? —She _______(pay) 350 yuan for it.

3. We will be _______(success) some day.

4. Tom is looking forward to _______(meet) his father's letter, because his father works far away.

5. The students in Class Five did _______(badly) in the exam than those in Class One last term.