Hearing the loud noise,the boy looked out of the window,__________.
A completely new situation is likely to _____ when the school leaving age is raised to 16.
I must go now. _____, if you want that book I'll bring it next time.
Achieving a high degree of proficiency in English as a foreign language is not a mysterious _____ without scientific basis.
They were so far away that I couldn't _____ their faces clearly.
---- May Day is drawing near. Are you going home for the holiday? ---- I haven’t decided yet. I_____ go home, but it all depends. A. may B.need C.willD must