_ we left the building that I realized how dangerous the situation had been.
| A．Only then | B．It was only then | C．Only after | D．It was only after |
The young doctor is determined to devote all his life to ________ the cause of cancer.
| A．studying | B．studied | C．study | D．studies |
This dictionary ________ me. It cost me twenty dollars.
| A．is belonged to | B．is belonging to | C．belongs to | D．belonged to |
I don’t like ________ you speak to her.
| A．the way | B．the way in that | C．the way which | D．the way of which |
Hefailedintheexamination,________madehisfatherveryangry.
| A．which | B．it | C．that | D．what |
There is no doubt ________ he will succeed.
| A．whether | B．which | C．that | D．if |