For the following questions (1 to 15), choose a, b, c or d.

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1I can't find my keys. I don't know where ____ are.

a.
b.
c.

2A: "Is he a teacher?" B: "Yes, he _____."

a.
b.
c.

3A: "_____ brush your teeth?" B: "Three times a day."

a.
b.
c.

4We _____ have friends over for dinner.

a.
b.
c.

5That's _____. It's very expensive.

a.
b.
c.