Please remember _______ the plants while I’m away.
______ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
The traveler _______ his coat on a stone and _______ down to have a rest.
The ______ look on the manager’s face suggested that he _______ to overcome the difficulty.
I told her we weren’t going to be friends any more because she couldn’t ________ .
The world’s population has grown by ______ it was in 1800.