1.We work from Monday_____Friday.We work_____weekdays.
B.to-on
from……to……由……至……
on weekdays,at weekends
2.He gave me_____yesterday.
D.some advide
advide 是不可数名词,不能加a或s
3.They have done a lot of things,but not____.
A everything 他们已做了很多事情,但不是所有都做了
4.They will come back_____the end of the month.
A.at
at the end of the month在月末的时候
5.People___travelled/traveled__by sea in the past.
(travel)
in the past是过去时,所以用动词的一般过去式