A.is, listening to | B.are, listening | C.is, listen | D.are, listening to |
A.What, waiting | B.Who, waiting for | C.Where, waiting | D.Where, waiting for |
A.What are you doing? |
B.What are they doing? |
C.What do they do? |
D.Where are they dancing? |
A.it | B.one | C.this | D.that |