1) Listen! Somebody ___ a lovely song.
a. are singing b. sing c. sings d. is singing

2) We ___ Tom for ages.
a.has not seen b.haven't saw c.are not seeing d. haven't seen

3) Don't call me at 6 o'clock this evening. I ___ my homework.
a. will have done b. do c. will do d. will be doing

4) They are ___ waiting for a bus. The bus hasn't arrived yet.
a. since b. yet c. still d.already

5)Tour operators sell___.
a.packaged tours b. packagings c.packing tours

6) Before he went to London he had read tons of ___ books to visit as many sights as possible.
a.adventure b. complaint c. children's