单选题 I can never forget the days ______ my family and I spent together in travelling.

单选题 The issue ________ at the meeting now is very serious.

单选题 Mr. Johnson, I am calling to ______ the rooms you reserved for tomorrow.

单选题 ______ hard I pushed, the door stayed closed.

单选题 The child ______ parents are talking with the teacher is playing with his new toy.

单选题 I ______ down the name of the book that he was talking about.

单选题 The hotel can ______ 600 guests.

单选题 The tall building ______ last month will be our new classroom building.