Ⅰ. 单项选择（30分）
( )1. Telephones ________ in 1876, much earlier than computers.
A. invent B. invented
C. are invented D. were invented
( )2. By the time we got home, the rain ________.
A. started B. would start
C. has started D. had started
( )3. My grandmother is so forgetful that she often ________ the key in her room.
A. forgets B. leaves C. forgets to D. leaves for
