I _____ through the hard time but for my teacher’s generous and timely help．
A． couldn’t have gone B． could go
C． mustn’t have gone D． hadn’t gone
The class teacher was anxious to hear one of his top students _____ because of family move．
A． will leave B． is leaving
C． was leaving D． has left
With the exam ______ in ten minutes, they were asked to hand in their mobile phones．
A． taken place B． taking place
C． having taken place D． to take place
More than one doctor _____ involved in the rescue that took place after the earthquake．
A． was B． is C． were D． are
Some hard working students always keep a torch in their dormitories _____ there is a power failure．
A． if B． unless
C． so that D． in case
_____ in charge of two classes made Mrs．Li, head of Senior Grade 3, extremely tired．
A． Leaving
B． Left
C． Being left
D． Having left
