______ was most shocking about the tornadoes in America was that they threatened six states and killed more than 100 persons.
| A．That | B．Which | C．Why | D．What |
Remember that you can have second try if you fail first time.
| A．the;/ | B．/;a | C．a; the | D．the; a |
—It’s late. I must leave now.
—OK.
| A．Thank you | B．Take care. | C．I’m sorry for it. | D．Don’t worry. |
It was in the museum I came across my best friend.
| A．where | B．which | C．that | D．when |
He was too tired and fell asleep with a book open on his knee.
| A．laying | B．lying | C．laid | D．lain |
They were playing in the garden they heard a scream.
| A．while | B．as | C．when | D．until |