Mr. Wang told us that he would devote all the time he could spend _______ his oral English before going abroad.
#11654
A
improve
B
to improve
C
improving
D
to improving
推荐题目
 I called you up last night but I couldn’t _____________.
#12534
A
get through
B
ring back
C
ring off
D
hang on
— I heard the phone ringing in the office next door. — You _______ it. They haven’t got a phone yet.
#11786
A
couldn’t hear
B
couldn’t have heard
C
didn’t hear
D
wouldn’t have heard