I'll be back in half an hour. There are 2 places of linking in this sentence.
举一反三
- I don’t think he’ll be back __ half an hour. A: after B: for C: in D: before
- I’m going out. I’ll be back _____ an hour. A: at B: on C: in D: from
- How long has she been there(). A: An hour. B: An hour and a half. C: Half an hour.
- I’ll give him half an hour to get here, then I’ll call time ______ him and go home. A: off B: in C: out D: on
- OK,let's__________.We'll start again in half an hour.