— Oh dear! I’ve just broken a window. — __________. It can’t be helped.
We can’t go on with the experiment because the computer_________.
The two sides have finally___________, though some small differences still exist.
The harder you work,____________.
--Do you like the material?--Yes, it ___________ very soft.
--Where is Xiao Wang? --I don't know. He__________ be in the library.