Điền mút hoặc mustn 't :
1 : We ..........pick flowers in the school garden .
2 : Cars ............. park in front of the entrance .
3 : We .............. be careful when we cross the road .
4 : You ........... use a mobile phone in the cinema .
5 : You ........... see that film . It 's fantastic .
1 : We ....must......pick flowers in the school garden .
2 : Cars ......mustn't....... park in front of the entrance .
3 : We ....must.......... be careful when we cross the road .
4 : You ......mustn't..... use a mobile phone in the cinema .
5 : You .....must...... see that film . It 's fantas .
1 : must not
2: must not
3 : must
4 : must not
5 : musst