一They ________tea in the garden．

A．are drinking　　　　　　　　　　  B．drank

C．have drank　　　　　　　　　　   D．drink

　　--What are Mr. and Mrs. Black doing?

　　--They ________ tea in the garden.

[　　]

　　--What are Mr. and Mrs. Black doing?

　　--They ________ tea in the garden.

[　　]

---What are Mr．and Mrs．Black doing?

---They ______ tea in the garden．

1. A.
   are drinking
2. B.
   drank
3. C.
   have drunk
4. D.
   drink