将下列句子改成否定句和疑问句,用can,may,must,can't,mustn't,needn't填空一,将下列句子改成否定句和疑问句1) They had to get up early yesterday.2) I was able to go to the meeting.3)The teacher will be able to come tonight.二,用can,may,must,can't,mustn't,needn't填空1) Must I come tomorrow?--No,you____2)____your brother swim?--Yes,he____.He is a good swimmer.3)We___ start now.We don't want to be late.

将下列句子改成否定句和疑问句,用can,may,must,can't,mustn't,needn't填空
一,将下列句子改成否定句和疑问句
1) They had to get up early yesterday.
2) I was able to go to the meeting.
3)The teacher will be able to come tonight.
二,用can,may,must,can't,mustn't,needn't填空
1) Must I come tomorrow?
--No,you____
2)____your brother swim?
--Yes,he____.He is a good swimmer.
3)We___ start now.We don't want to be late.