We (wait)  ............ for her for half an hour before she came, The population of the world (rise)  ............ very fast, When she came back, everything (already/change) ............, She will go abroad as soon as she, I (read)  ............ that novel at least twice, You can't see Tom now because he (have) ............ a bath, I won't go out now because it (rain)  ............, Can I borrow your pen or  ............ you (use)  ............ it at the moment?