Up till now, full use of this theory has been ________ in building large ocean-going ships.
#96339
A
done
B
made
C
laid
D
taken
推荐题目
I saw the boy _____ out a moment ago.
#98276
A
run
B
runs
C
how to run
D
running
 Before leaving home, make sure to turn off the electricity, lock the door, ______ the windows open.
#98177
A
and not to leave
B
instead of leaving
C
rather than leave
D
and not leave
The 18-storeyed building, when _____, will shut out the sun _____ up the rooms in my house.
#98840
A
completed; lighted
B
completing; lighting
C
completing; lighted
D
completed; lighting