—What time shall we meet tomorrow morning, Kate?—Let’s ______ nine thirty.
This work is very difficult. It needs great _____.
They ____ repairing the wall. The _____ was smooth(顺利).
Later he left home ___ in different cities.
It is a bad habit to ____ others’ homework. You should do ____homework by yourself.
The teacher didn’t understand why the pupil had ____.