Jim,was your friend born September,1999?
You are _______ out all the difficult problems .
I have problems _______many things. For example, I have problems ________ learning Maths well.
The second Sunday of May is ______ Mother’s Day. It’s ______special day for children to show their love for their mothers.
—Simon,I wonder _______. —Last Saturday.
We’ll do what we can ______ English well this term.