问题
Walking exercise may be boring ____________, but early on a clear sunny morning there can be nothing finer.
A:in time
B:on time
C:at times
D:some time;
B:on time
C:at times
D:some time;
正确答案是：
同类题型
The professor you referred to in the letter______ usstudents three lectures by next Monday.
A number of people_____killed by the terrorists at the Urumqi station.—-_____terrible it is!
She is dying abroad for further study.[ ]
I often have _______ egg and a glass of milk for _______ breakfast every day.
He always makes a lot ofnoise.——-You’d better _______a quiet place_______.