1 May
2 Can / Could
3 can
4 can't
5 couldn't ,can
6 may
7 must
8 can't
9 may
10 mustn't ,can / may
11 can't
如果不明白,请再问;如果对你有所帮助,
请点击本页面中的“选为满意回答”按钮,
1 May
2 Can / Could
3 can
4 can't
5 couldn't ,can
6 may
7 must
8 can't
9 may
10 mustn't ,can / may
11 can't
如果不明白,请再问;如果对你有所帮助,
请点击本页面中的“选为满意回答”按钮,