In our school library, there _____a number of books on science andthe number of them _______growing larger and larger.
We should study the new traffic rules and 1earn how___________ ourselves.
--- Does Ted tell you if he _______________ next Sunday?--- No, he does’t. But if he ________________, I’ll give you a ring.
Tom ______________ sending e-mails _____________ letters.because it is faster.
I___________ some clothes to charity because they are too small for me.
Nobody is perfect, but everyone is different ______________ others.