【题目】If you ________ the door, you close it and you can’t open it without a key.

【题目】The (perform) will put on a new play today.

【题目】He doesn't like studying math. His grade is the (bad) in our class.

【题目】It is (四十九) days since I wrote an e-mail to him after hearing the bad news.

【题目】He went into his room, the light and began to work.

【题目】My English teacher is the most important person that has （影响) my whole life.

【题目】–Where are you going on vacation?

【题目】I feel math is (difficult) than Chinese.