The safety of food has become one of the ________ problems in our daily life．（ ）
A．importantB．more important
C．most important
The restaurant is very popular because the waiters there are ___________ customers．（ ）
| A． |
thirsty for |
B． |
strict with |
| C． |
hard on |
D． |
friendly to |
Look! The children are playing in the swimming pool．
___________ great fun they are having!（ ）
| A． |
What |
B． |
How |
C． |
What a |
D． |
How a |
Why didn't Alice come to the party last night？
Because she ___________ online classes at that time．（ ）
| A． |
takes |
B． |
took |
C． |
was taking |
D． |
has taken |
We're practicing spoken English． Would you like to join ___________？（ ）
| A． |
me |
B． |
us |
C． |
you |
D． |
them |
Lucy， where's your sister？
Look! She ___________ in the yard with our dog．（ ）
| A． |
played |
B． |
has played |
C． |
plays |
D． |
is playing |