—You see，I’m poor in maths，you are not good at English，and...
—That’s________we should help each other.
| A．when | B．where | C．how | D．what |
Both the Winter and Summer Olympics are held ___________on a regular basis.
| A．every four years | B．four years |
| C．for four years | D．every fourth year |
What do the five rings on the Olympic flag ___________?
| A．stand by | B．stand up |
| C．stand out | D．stand for |
Visitors were _______ at the ________pictures that the guide showed.
| A．amazed; amazing | B．amazing; amazing |
| C．amazed ; amazed | D．amazing; amazed |
I can never forget the day ________ we worked together and the day ________ we spent together.
| A．when; which | B．which; when |
| C．what; that | D．on which; when |
Is this the reason _______ he was late for the meeting?
| A．why | B．when | C．where | D．what |