–Shall we go and ________ hello to the foreign teachers?–Good idea! Let’s go.

 Mr Green _____ to the manager now. You’d better call him later.

Flowers and trees ________ every year. Now our city is getting more and more beautiful.

—When you have difficulty , do remember to_________. Two heads are better than one.

It’s dark. I would rather ______in bed than ______a walk outside.