Mr. Smiths was busy writing a story, only ______ once in a while to smoke a cigarette.
#88541
A
to stop
B
to have stopped
C
being stopped
D
stopping
推荐题目
 The boy ______ in the exam is a student in Class Nine.
#90232
A
catching cheating
B
caught cheated
C
catching cheated
D
caught cheating
Can you imagine the actress ____ so much in public?
#97862
A
admiring
B
admired
C
to be admiring
D
being admired
Your composition is good but your handwriting still requires   .
#97781
A
improving
B
improved
C
being improved
D
to improve