--Why didn’t you come to Simon’s party last night?---I wanted to, but my mom simply _________ not let me out so late at night.

—_______ do you clean your room?— Every day. 

One of our rules is that every student_____wear the school uniform while at school．

It's nearly time for the meeting to start. The manager ________ be here soon.

—Can I go to the park, Mum?—Certainly. But you ______ be back by six o’clock.