I think ____necessary for us _____the birds.
| A．it , protect | B．its, to protect |
| C．it’s , protecting | D．it , to protect |
The woman ____________all of her money to charities to help the poor.
A. gave in B. gave up C. gave away
Between the two hills there _____ a deep river.
A. are B. has C. is
—Do you often play_______ football with your friends?
—No, I don’t like sports. I often play______ piano in my free time.
A. a, the B. the, / C. /, the
It’s important _______ the piano well.
A. of him to play B. of him playing C. for him to play
The teacher speaks very loudly _______ all the students can hear her.
A. so that B. because C. since