The community worker is patient enough ________to the old how to use Health Code（码）.（ ）
A．explainB．explainsC．to explainD．explaining
It is ______ known that more and more foreigners are learning Chinese culture now．（ ）
| A． |
politely |
B． |
loudly |
C． |
widely |
Both Lily and Lucy ______ to the party yesterday，but they didn't come at all．（ ）
| A． |
were invited |
| B． |
was invited |
| C． |
invited |
Ode to Joy（欢乐颂）is a TV play ______ many people like．（ ）
| A． |
why |
B． |
that |
C． |
who |
You ______ cross the street when the traffic lights are red．（ ）
| A． |
needn't |
| B． |
don't have to |
| C． |
mustn't |
I won't go home ______ the rain stops．（ ）
| A． |
since |
B． |
so |
C． |
until |