13.---Don’t forget to take your cell phone. ---But it’s just been announced that no students__________bring cell phones to school.
Up to now,the program________thousands of children who would otherwise have died.
—Who do you think ________the book here? —It may be John.He was sitting here all the morning.
Mum,you really need to have a rest!You ________in the kitchen ever since you came back home three hours ago.
I have called the station and they told me the next train for Dalian ________at 3∶10.
Who do you think ________ for the accident?