My trousers are too old. I’ll have to buy ___.
| A．a new pair | B．a new one | C．a pair of | D．some new pair |
He pointed to ______ looked like a tomb and said, “Ghost.”
| A．that | B．what |
| C．which | D．as |
After _______ had happened he could not continue to work there.
| A．which | B．how |
| C．what | D．having |
She was so angry and spoke so fast that none of us understood _______ he said meant.
| A．that | B．what |
| C．that that | D．what what |
______ medicine works in a human body is a question _______ not everyone can understand fully.
| A．How; that | B．That; which |
| C．That; which | D．What; that |
____ has helped to save the drowning girl is worth praising.
| A．Who | B．The one |
| C．Anyone | D．Whoever |