The book is primarily ___________ Soviet-American relations during the Cold War.
| A．concerned about | B．concerned with | C．concerned for | D．concerned in |
. He didn't want to see anybody, so he spent six hours ____ in the small room.
| A．locked | B．to lock | C．locking | D．being locked |
My son is very shy, but can you imagine ____ at the English party?
| A．him sing | B．his singing | C．him to sing | D．his to sing |
The Chinese ____ prefer tea to coffee.
| A．almost | B．nearly | C．most | D．mostly |
Although he likes playing tennis, he is ____ but a good tennis player.
| A．anything | B．something | C．nothing | D．everything |
Professor Li, who I ____ abroad, still teaches in Peking University.
| A．think went | B．think to have gone | C．thought went | D．thought had gone |