The boy is afraid ________ cross the bridge, because he is afraid ________ falling into the river.
How much does the ticket ______ from Shanghai to Beijing?
---Why does Tommy look excited ? --- Because he can’t wait ______ part in the basketball match.
Don’t forget to _______your notebook here tomorrow.
The exam is much ______ than before.
My parents told me try ______on Christmas Eve because Santa Clause may come and send me some gifts.