The teacher usually grades the students on _______ they have behaved.
| A．that | B．what | C．which | D．how |
Once _____, it won’t be easily forgotten.
| A．saw | B．seeing | C．seen | D．see |
_______ David says sound right to Helen. That’s why he has made up her mind to leave the matter to him _______ happens.
| A．Whatever; whatever | B．No matter what; whatever |
| C．No matter what; no matter what | D．However; no matter what |
On stepping into the office, the girl was frightened to find that the whole office was filled with ______ looked like tiny worms.
| A．that | B．something | C．what | D．anything |
It doesn’t make any sense for us to _______ foreigners on public occasions, which will in turn make them _______ you.
| A．stare at; glare at | B．look at; gaze at | C．observe; glance at | D．glare at; watch |