The teacher objected to students’ ________ their opened umbrellas near the door.
A. setting
B. to set
C. having set
D. set
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________ in bed for several hours, he felt much better.
A. Having lain
B. Having laid
C. Laying
D. Lying
He made the request that the problem ________ at the meeting.
A. is discussed
B. discusses
C. be discussed
D. will be discussed
She was ________ and did not know what was waiting before her.
A. puzzling
B. puzzled
C. being puzzled
D. puzzle
Only when she started to explain ________ the reason for this.
A. she realized
B. did she realize
C. she had realized
D. had she realized
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