Jack is one of those men who_________ best evening the most difficult situations.
| A．his | B．your | C．their | D．one's |
I will never forget the park __________ I spent so many happy hours there with my parents last summer .
| A．where | B．because |
| C．which | D．so |
In fact , the hazy weather problem is so severe now that it has aroused __________ nationwide concern about __________ environmental pollution .
| A．/ ; / | B．/ ; the |
| C．a ; / | D．a ; the |
– I spent three hours buying a train ticket at the railway station the other day .
-- Why ? You __________ one on the Internet or by phone .
| A．could have bought | B．must have bought |
| C．would buy | D．should buy |
The newly married couple couldn’t afford to buy a new car ; __________ , they bought a used one .
| A．however | B．instead |
| C．otherwise | D．still |
– Well , Jack , I am sorry that I have to leave .
-- __________ . Let’s email often .
| A．Enjoy yourself | B．That’s for sure |
| C．So am I | D．Keep in touch |