Some people get in touch with each other by mobile phones__________ others keep contact with each other by e-mail.

______ do you visit your uncle? — Once a week. [ ]

I always make mistakes in my math exams. What should I do? –I think you should be _________.

Have you decided where to spend your summer holiday?–Not yet. We _____ go to Hong Kong.

What does “plumber” mean, Alice?—It means a person fixes sinks and toilets.