Listen! Do you hear someone for help?
A. calling B. call C. to call D. called
She can't help ______ the house because she's busy making a cake.
A. to clean B. cleaning C. cleaned D. being cleaned
When and where to build the new factory ____yet.
A. is not decided B. are not decided C. has not decided D. have not decided
Tom as well as two of his classmates _____invited to the party.
A. was B. were C. have been D. had been
The old ____well looked after by the government in China.
A. is B. are C. has been D. was
______the room, a letter was seen lying on the desk.
A. Entering B. Entered C. After entering D. When he entered
