Frank often wears a mask _____ he can keep fit in the foggy and hazy (霾) weather.
How time flies! It’s almost three years _______ we met last time.
__________ generous __________ the little girl to share her toys with other kids.
— My mother doesn’t like going shopping in Hong Kong at all. — Well, shopping there isn’t liked by _________.
— Shall we meet at the station at 8 a.m.? — In fact we _________. The train _________ until 10 a.m..
— We must act now because time is _______.— Yes. Let’s start.