Chọn đáp án đúng để hoàn thành câu:

The next meeting ________ in May.

is supposed to sign                 

is supposed to be signed

was supposed to sign

was supposed to be signed

must be worn    

must wear

must have worn              

must have been worn

might be replaced          

might have been replaced

should have been replaced

should be replaced

can be participated      

could be partipated    

can participate            

could participate

must forget                                                        

must be forgotten

must have been forgotten                                 

must have forgotten

has to be wrapped                                      

has to wrap

had to be wrapped

had to wrap

needn't be taken         

needn't be taking                    

needn't take

needn't taking