—Mary can't help ______ the house. Why?—Because she is busy______ a hotel reservation.A. cleaning; making B. to clean; making C. cleaning; to make
下列字母书写格式正确的是 ____. A. B. C.
---Give me a minute to check out, and I’ll meet you outside the hotel. ---________, Mike. I am not in a hurry.
---Could you tell me ________? ---By searching the Internet.
________ new words is important in ________ English.
---How long have you ________? ---- Since 1990.