Choose A, B, C, D that best completes the sentence or that can substitute the underlined part.
When she found the door unlocked, Mary opened it cautiously.
A.The door unlocked
B.When the door unlocked
C.On finding the door unlocked
D.Found the door unlocked

Choose A, B, C, D that best completes the sentence or that can substitute the underlined part.
________, I went downstairs to see what happened.
A.Heard some strange noise
B.Hearing some strange noise
C.When heard some strange noise
D.As to hear some strange noise

Choose A, B, C, D that best completes the sentence or that can substitute the underlined part.
The building could be entered ______.
A.being replaced the broken lock
B.for being replaced the broken lock
C.after replacing the broken lock
D.after being replaced the broken lock

Choose A, B, C, D that best completes the sentence or that can substitute the underlined part.
As you are a doctor, you have to take responsibility for human life.
A.As a doctor
B.To be a doctor
C.On being a doctor
D.For a doctor

Choose the best answer to each of the following questions.
________his terrible secret.
A.Did they learn only later
B.Only later they did learn
C.Only later they learnt
D.Only later did they learn

Choose the best answer to each of the following questions.
I cannot swim very well ______.
A.and neither my sister can
B.and neither can my sister
C.and so my sister can
D.and so can my sister

Choose the best answer to each of the following questions.
______ the problem, he wouldn’t have committed those mistakes
A.Had he understood
B.He had understood
C.If had he understood
D.Unless had he understood

Choose the best answer to each of the following questions.
______ a more beautiful sight.
A.Nowhere hadn’t Susan seen
B.Had Susan seen nowhere
C.Nowhere Susan had seen
D.Nowhere had Susan seen

Choose the best answer to each of the following questions.
Not until the next morning ______ how serious ______ .
A.she realized/ was it
B.she realized/ it was
C.did she realize/ was it
D.did she realize/ it was

Choose the best answer to each of the following questions.
Only when______ into smart clothes after the match ______ to talk to the TV reporters.
A.The players had changed/ they were allowed
B.The players had changed/ were they allowed
C.Had the players changed/ were they allowed
D.Had the players changed/ they were allowed