Ⅰ. 单项选择。（共20分，每小题1分）
1.Tom，I’ll invite you to have lunch after playing violin 。
A a， the B the，the C /，/ D /，the
2. My clock often ____ in the morning
A wake me up B wakes me up C wake up me D wakes up me
3. The workers are made _____ for ten hours a day.
A working B work C worked D to work
4. Look at the sign” No _____”
