20.The librarian did some careful checking and found several books__ from the shelf.
A、leaking
B、missing
C、losing
D、dropping
27
A、healthy
B、bright
C、stable
D、secure
Directions:There are 15 incomplete sentences in this section. For each sentence there are four choices marked A, B, C and D. Choose one answer that best completes the sentenceand blacken the corresponding letter on the Answer Sheet.6–-Did you find the film boring?一-Not at all. It was _____