... ...
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...
4 Put the verbs in brackets into the correct form.
1) We ... (to have) the conference since ten o'clock. 2) The
boys ... (to fish) for three hours now. 3) ... Jane ... (to skate)
since four o'clock? No, she 4) ... they (build) the
house for a year now? Yes, they . 5) How long ... you
(to watch) the race? - I ... (to watch) the race for twenty
minutes now. 6) What ... they (to do) since morning?
They (to decorate) the hall for the party. 7) With whom ..
Fred ... (to play) tennis? He (to play) tennis with Dick.
8) Whose call ...
Cathy (to wait) for? She (to wait)
for a call from her boss. 9) The doctors (to operate) on
the patient for five hours now. 10) How long the police
(to investigate) this murder? They. (to investigate) this
murder for three weeks.
.
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1. did the teacher repeat the question? the teacher didn't repeat the question. 2. did the boys play football in the afternoon? the boys didn't play football in the afternoon. 3. did the girl catch a cold? the girl didn't catch a cold. 4. did mother turn off the gas? mother did not turn off the gas. 5. did they sleep in the open air? they did not sleep in the open air. 6. did the pupils answer at once? the pupils did not answer at once. 7. did the boy break the window? the boy did not break the window. 8. did the woman change her clothes? the woman didn't change her clothes. 9. did the tourists reach the village before dark? the tourists didn't reach the village before the dark. 10. did the clock strike five? the clock didn't strike five. 11. did our team win the match? our team didn't win the match. 12. did the doctor allow you to go out? the doctor did not allow you to go out.