—Do you know ________ she went to the movie last night?—On foot.A. when B. why C. how
The new headmaster looks _________ to all the teachers and students of the school.
If the kids stay indoors all the time and get no exercise, they _________ weak.
At the meeting the boss was explaining his plan while his secretary_________ the notes.
Mr. White spent about one hour and a half _________ the accident report yesterday evening.
To live a green life, we try_________ more energy and produce less pollution.