As the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.
A.before | B.unless | C.since | D.until |
The letter he had been looking forward to at last.
A.come | B.comes | C.coming | D.came |
“ You smoke in the bedroom”, Rose said to her hushand and pushed him out of the room.
A.needn’t | B.mustn’t | C.dare not | D.won’t |
— May I open the window to let in some fresh air?
— .
A.Come on | B.Take care | C.Go ahead | D.Hold on |
What surprised me was not what he said but he said it.
A.the way | B.in the way that |
C.in the way | D.the way which |
parents say and do has a life long effect on their children.
A.That | B.Which | C.What | D.As |