4. People begin to know that most environmental problems exist because necessary measures for preventing them _______taken in the past.
| A．are not | B．were not | C．hadn't been | D．wouldn't be |
Only through _______ talks can we build trust and only through cooperation can we create ________ win-win economic situation．
| A．\ ; a | B．the ; the | C．\ ; the | D．the ; a |
The news shocked the public,________ to great concern about students’ safety at school．
| A．having led | B．led | C．leading | D．to lead |
----What will you buy for your husband’s birthday?
---- I want to buy a ________ wallet for him．
| A．small black leather | B．black leather small |
| C．small leather black | D．black small leather |
---I want to make a kite for my son．
--- __________ You can easily buy one in the market．
| A．Why not ? | B．Good idea! | C．Why bother ? | D．No way! |
We’ve asked our neighbors to ________ the house when we are away on vacation.
| A．keep an eye on | B．have an eye on | C．have an eye for | D．get an eye on |