问题
They haven’t seen each other for ten years, but they still keep in _____ contact with each other.[ ]
A: constant
B: instant
C: content
D: consistent
B: instant
C: content
D: consistent
正确答案是：
同类题型
We should tell hunters _______tigers.
Hermotherdoesnot__________ofhergoingtostudyinBritainalone. [ ]
teaching in a university, healso spent some time teaching in a night school
49 I don’t know whether small oranges aresweeter than big ______
__________ years ago, life was much harder than it is today.