how to work out the difficult physics problem ,he asked the teacher for help .
A.Not to know | B.Not knowing | C.Knowing not | D.Not known |
I said hello to you in the street yesterday, but you ________ me completely.
—I'm sorry. Maybe I didn't notice you.
A.cheated | B.hid |
C.ignored | D.recognized |
petrol
A.fluent | B.destroy | C.prefer | D.spelling |
concern
A.cartoon | B.suitcase | C.calm | D.cycle |
active
A.stage | B.attack | C.accent | D.usage |
earthquake
A.method | B.bother | C.breathe | D.although |