It is very important ________ your hands before meals.

[　　]

I have a problem ________ football well.

[　　]

You can know the moods of people ________ the colours they choose to wear.

[　　]

--Have you ever visited any wonders of Beijing?

--Yes, I ______. I ______ them last summer holidays.

[　　]

--Have you finished your homework?

--No, I haven't. But I ______ it tomorrow.

[　　]

--Has he ______ for Shanghai already?

--Already? He has ______ there for three days.

[　　]

Lucy and Lily can speak good Chinese, because they ______ China for six years.

[　　]

He dropped off the bike ______ his carelessness.

[　　]

I will ______ speak Japanese in another three months.

[　　]

We'll spend ______ possible studying because we'll graduate from school.

[　　]