单选题 Hardly ____ home when it started to rain heavily.

单选题 My father told me a story last night. It is ____ one I’ve ever heard.

单选题 The policeman told the children ____ play in the street.

单选题 Not only ____ hard, but he also helped his classmates.

单选题 If I ____ you, I would accept the job offer without hesitation.

单选题 The problem is ____ difficult for me ____ solve.

单选题 —Let me introduce the new professor to you. —Mary: ____

单选题 In the past, it was a small stamp that helped family members and friends to ____ each other.