用所给动词的正确形式填空。

1. _______ (take) a bus is much faster than walking.

2. Simon spends a lot of time _______ (practise) playing basketball every day.

3. He with his friends _______ (play) football now in the playground.

4. I will go with you if it _______ (not rain) tomorrow.

5. Can you help me ________ (solve) the problem?