________ you understand the rule, you’ll find English easy to learn.
| A．As | B．While | C．Once | D．Whether |
She studies ___ medicine before she turned ___ writer.
| A．×; × | B．the, a | C．×; a | D．the; × |
He cut the cake.
| A．in halves | B．in half | C．into halves | D．into half |
His uncle gave him books to read, but after a page or two he would put __book down and pick up__ new one.
| A．the,/ | B．a; a | C．a; the | D．the; a |
You’ll have to spend writing your report here.
| A．one day or two days | B．one day or two | C．a day or to | D．two days or one |
A non-smoker can hardly imagine__ pleasure of having__ smoke after a meat.
| A．1, a | B．a, a | C．the, a | D．1,1 |