Man must keep in mind that it will be years ________ the earth recovers from the damage he makes to it.[ ]

Robin told me that he would leave tonight.—What a pity! My brother wishes that he ________withhim for a chat.

________ do you improve your English —I improve it ________ practicing it more often.

Going to the Anne’s wedding to be held this weekend—_____ I’ll be free then.

The high-handed(高压的) way in which Washington dropped the idea on its Western partners ________ some unfriendly reaction it has received.[ ]