Let's learn to use the problem we are facinga stepping-stone to future success.
.---Sorry, Mum. I’ve lost my pen again.I_____it! You never remember to put your things away after using them.
---Has Tom finished his job yet? ---I have no idea of it; he _____ it this morning.
I should very much like to have gone to the party, but______.
He has much money at the beginning of every month, but by the end of it he_____ have little left.
.Sally______ a book about China last year but I don't know whether she has finished it.