Students would like to stay in ________ air-conditioned classroom in summer.
A.a B.an C.the D./
Nowadays, there is no __________/kən'dʌktə(r)/ on most of the buses in our city.
The hotel only __________/prə'vaɪdz/ free parking for its guests (顾客) .
The __________/nəʊtɪs/ on the wall said 'No smoking'.
What will __________/'hæpən/ if we have no forests?
The car __________/'sʌdənlɪ/ ran into a tree.