We don’t doubt _____ he can do a good job, concerning his experience.

Three of us will go there, and the rest （ ） to stay here.

We’re talking about the piano and the pianist （ ） were in the concert we attended last night.

I think it’s high time we _____ strict measures to stop pollution.

Yon don’t have the right to blame me _____ being late， for I was busy typing your business invitations.

The football player is hoping to（ ）to another team soon．

At the 60th anniversary, the guests sitting in the front are those ______ graduates from the university.

The football match was （ ） on account of rain.

Scientists say it may be five or six years （ ） this medicine is tested on human beings.

It’s high time we _____ strict measures to stop pollution.

You have to （ ） early in the morning to avoid the rush hour.

When I was a child, I used （ ） to the river and bathe in the evening.