I’m sorry I couldn’t meet you yesterday. I (17) ………………………………… (not go) swimming if I'd known you were coming into town. I hope you had a nice time with Becky. If you (18) ……………………..………… (see) her tomorrow, say hello from me. I'm busy learning my lines for the play I'm in. I'm so busy I wish I hadn’t agreed to be in it, but never mind, we’ve done quite a lot of the first part, so I’m leaming some of the second part in case we (19) ……………………..………… (do) that at our next rehearsal, it's not going to be easy. I’m sure it would be easier if I (20) ……..……….………………… (can / understand) my lines, but I don't!  SOS!!!cứu với

I’m sorry I couldn’t meet you yesterday. I (17) would not have gone (not go) swimming if I'd known you were coming into town. I hope you had a nice time with Becky. If you (18) see (see) her tomorrow, say hello from me.

I'm busy learning my lines for the play I'm in. I'm so busy I wish I hadn’t agreed to be in it, but never mind, we’ve done quite a lot of the first part, so I’m leaming some of the second part in case we (19) do (do) that at our next rehearsal, it's not going to be easy. I’m sure it would be easier if I (20) could understand (can / understand) my lines, but I don't!