Tom was about to close the window ________ his attention was caught by a bird.
A. when B. it C. and D. till
With so many noises from the busy traffic in the street, I couldn’t______ and do my research work.
A. put down B. set down
C. cut down D. settle down
You _______ here last week if you were really worried about your work.
A. ought to come B. ought to be coming
C. ought to have come D. ought have come
The wooden house______ by many trees_______ south.
A. surrounded; facing B. surrounded; faces
C. surrounding; facing D. surrounding; faces
The boy was seen _______ in the examination and was punished by the teacher.
A. cheating B. cheat C. cheated D. having cheated
If you_______ smoke, please go outside.
A. can B. should C. must D. may
