There are two main sets of Games — the Winter and the Summer Olympics, and both are held every four years on a _________ basis.­­­­­
#17792
A
valuable
B
former
C
regular
D
swift
推荐题目
Though he is_______, he never feels_______. 
#19842
A
lonely; alone
B
lonely; lonely
C
alone; lonely
D
alone; alone
The ________ look on her face suggested that she _________ it. 
#18691
A
puzzling; hadn’t expected
B
puzzled; hadn’t expected
C
puzzling; wouldn’t expect
D
puzzled; shouldn’t expect