I didn’t know your telephone number; otherwise, I ______ you long ago.
—Johnson,come and look at the sea! It is beautiful,isn’t it? —Absolutely! If only____I here by the sea.
.—It’s a long time since I saw my brother. —Why ________ him this weekend?
—Would you mind closing the window to keep out the noise? —________.I’ll do it right away.
There are about ______ people in the park on National Day.
We found ______ very difficult for the children to understand what the chairman said at the meeting.