19. The crew must take a rest because they _______ from a long trip.
(A) have just been returning (B) have just been returned
(C) just return (D) have just returned
23. Physical therapists use their professional knowledge to assist you _______ supportive devices like a
crutch or cane.
(A) and use (B) to use (C) use (D) in using
35. “Have you ever been to the Grand Canyon?” Choose the best response.
(A) I have. Never I had seen such a wonder. (B) I have. Never had I seen such a wonder.
(C) I have. I haven’t ever seen such a wonder. (D) I have. Ever have I seen such a wonder.
36. The babies of lions and bears are called cubs, but a person or a monkey _______ has just been born is
called a baby.
(A) that (B) who (C) which (D) either
46. Because there wasn’t sufficient time, data precision and accuracy were barely _______ and reported in
carbon monitoring.
(A) acquired (B) accessed (C) assessed (D) assumed
47. Chiufen is an old gold-mining town that _______ economically when the gold ran out in the middle of
the last century.
(A) dropped (B) declined (C) fell (D) disappeared