---I was trying to carry out the plan, but I failed.---Well, you _________, for we were uncertain it would do ________.
The weather in Britain is ____too cold in winter___too hot in summer.
There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be closed.
If you have a problem _____ your composition, you had better ask your teacher ______.
It's quite strange that the man sleeps with his mouth____ and his eyes _____.
His father looks young, but _____ fact he is _____.