Computers are so popular in our country that every pupil knows _____ e-mails.
A.how can he send |
B.how does he send |
C.how to send |
D.how sending |
We built this factory ______ top speed and minimum(最少的) cost.
A.in | B.at | C.with | D.on |
There is a big and beautiful lake ______ the foot of the hill.
A.at | B.in | C.with | D.on |
We go _____ duty at 8 a.m.
A.on | B.in | C.at | D.for |
Li and I arrived ______ Heishan country safe and sound, all is well. Don’t be worry.
A.in | B.on | C./ | D.at |
The kids are doing some experiment ______ the farm in the country.
A.in | B.at | C.on | D.for |