1) It's already 10 o'clock I wonder how it _______ that she was two hours late on such a short trip.
A. came over B. came out C: came about D. came up
2) The better __________ you have of words, the better chance you have of saying exactly what you mean.
A. demand B. comment C. command D. performance
3) The teacher usually writes his _________ on the margin of the composition.
A. comments B. words C. review D. command
4) It is surprising that such an innocent-looking man should have ________ such a crime.
A. confirmed B. clarified C. committed D. conveyed
5) Letterboxes are much more _______ in the UK than in the US, where most people have a mailbox instead.
A. common B. normal C. ordinary D. usual