Not until all the fish died in the river ________ how serious the pollution was.

[　　]

His mother had thought it would be good for his character to ________ from home and earn some money on his own.

[　　]

My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.

[　　]

It was raining heavily. Little Mary felt cold, so she stood _______ to her mother.

[　　]

Look, ________.

[　　]

Only in this way _______ progress in your English.

[　　]

The singer and dancer ______ our evening party.

[　　]

The problem is not too hard. I think you can_______.

[　　]

The bed ________ wood _______ three different parts.

[　　]

The two matters are ________.

[　　]