Students _____ be allowed to use mobile phones at school.--------I agree.Phones can bring troubles.
There is going to be an important meeting tomorrow. Please ask them ______ there on time.
Little Henry _______ the model plane for three years and he really loves it.
---These problems are too hard to ______. Could you give me some advice?--- There are many ways. The most important is to have a careful plan.
Just now my teacher told me, “______ be late again, or I’ll be angry.”
Children _____ sit in the front seat of the car. It’s too dangerous.