Tom is keen _____ surfing the Internet in his spare time.
I wonder ______ you were doing last night.
______ won’t be long ______ National Day comes.
I’m afraid nobody but his parents or Jim, his best friend, _____ the secret.
At that time, he spent as much time as he can _______the ancient status which would be sank in the river.
Reading _______the lines, I would say that the government are more worried than they will admit.