—Joan was badly injured in the accident yesterday and she was sent to hospital.
—Oh, really? I ________ . I ________ visit her.
-It’s late.I must leave now.
-OK.________.
——How do you like the set of popular science books?
——Wonderful! It _____ many problems we are interested in exploring.
—Did you have a good time in Veitnam last week?
---______, it was too hot.
-Can I turn on the TV?
- Yes, of course.
---Why aren’t they here yet?
---They_____ the bus.
---Why didn’t you put your cell phone in your overcoat pocket?
---I ________, but I was afraid it would be stolen.
---Is there a fog in the evening ?
---There _____ be . I’ll make a phone call to find it out .