1. to fall (over, down), to collapse, to take a fall, to topple
2. to be destroyed (in a collapse), to collapse, to cave in, to crumble, to give away
3. to be confined to bed (with an illness), to come down with, to break down (e.g. from overwork)
4....
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
1. indicates the subject of a sentence
2. indicates possession
3. but, however, (and) yet, though, although, while
4. and
5. used after an introductory remark or explanation
6. regardless of ..., whether ... (or not), no matter ...
7. indicates a des...
