The professor gives every one of us the impression________he is a real expert in this field.

Mum, my friends are waiting for me outside. May I goout to play with them— Yes, you ,but be careful, please.

th Mr Brown _______ us, we willsurely make more progress in our oral practice

You had better take an umbrella with you _____ it rains.[ ]

The shop ________ at 8:00 a.m. and it________ for ten hours every day.