Glad to see you back. How long in Russia?
The program is like a window on the world ____ you sit by it and fix your attention on what it shows.
—Ms Lin looks rather a kind lady. —But in fact she is cold and hard on us. You ____ believe it!
Will you see to ____ that my birds are looked after well while I’m away?
The number 9.11 is a special number, ____, I think, that will be remembered by the Americans forever.
The car ____ at the present speed until it reaches the foot of the mountain at about nine o’clock tonight.