问题
When people move to another country, they often try _____ the customs of their native land.
A: to keep on
B: to keep off
C: to keep up
D: keeping up
B: to keep off
C: to keep up
D: keeping up
正确答案是：
同类题型
Has your mother finished her paper yet? — I don’t know; she _______ it this morning.
One more day，________I’ll get everything ready
A fire ______ in the center of the market last night. Luckily, no death ______ so far.
The number of the teacher invited _____ twelve, but a number of them ___ late for different reasons.