题目内容
Up to now, our society ________ with limited living space and a shortage of natural resources.
| A.has been challenged | B.is being challenged |
| C.is challenging | D.has challenged |
A
解析
He _____ to us that those eggs which were _____ on the table had been _____ by snakes.
| A.lied; laying; lied | B.lied; lying; lain | C.laid; laid; laid | D.lied; lying; laid |
When to go for the on-salary holiday yet?
| A.are not decided | B.have not been decided | C.is not being decided | D.has not been decided |
—Lily is going to make a presentation in class this afternoon.
—Oh, really? I ________ it was Michael's turn.
| A.think | B.have thought |
| C.thought | D.am thinking |
—What's the matter with Philips?
—Something must have happened to him. He left home three hours ago, but ________ at the party!
| A.didn't arrive | B.isn't arriving |
| C.hadn't arrived | D.hasn't arrived |
It's said that they ________ a better life ever since they moved to the US.
| A.had enjoyed | B.have been enjoying |
| C.were enjoying | D.would enjoy |
We are glad to ________ you on the progress you have made.
| A.congratulate | B.celebrate |
| C.greet | D.appreciate |
After walking on the zigzag path to the mountain top for a few hours, the tourists gathered under trees ________ shade and ________ down to have a rest.
| A.provided; sit | B.providing; sitting |
| C.providing; sat | D.provided; sat |
—Joan,what ________ in your hand?
—Look!It's a birthday gift for my grandma.
| A.had you held | B.are you holding |
| C.do you hold | D.will you hold |