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1.    It's too________ (noise) outside. What's happening?

5.    After four classes, I felt s____________ .

4.  Put on your c__________ . It's very cold outside.

3.    We often do many experiments in the 1_____________ .

2.    My uncle is a p_________ . He often catches thieves.

5.  There must  be something        the garden these days.

A. visit        B. visits

C. visiting      D. visited

4.    I often hear him__________ in the next room.

A. to sing      B. sing

C. sang        D. singing

3.    Her son didn't come back home until 12 ： 00 last night. So she was very____________ him. 

A. worry     B. worried  C. worried about   D. worry about

2.This story__________ a long time ago.

 A. was happened   B. was happening C. happened  D. has happened