Spending time with families _______ the happiest thing．（ ）
| A． |
are |
B． |
is |
C． |
be |
You smoke at the oil station， it's too dangerous．
I'm sorry， I won't．（ ）
| A． |
couldn't |
B． |
needn't |
C． |
wouldn't |
D． |
mustn't |
Although our plane met with a storm， it landed ．（ ）
| A． |
safely |
B． |
suddenly |
C． |
secretly |
D． |
heavily |
The dish smells delicious， but it a little salty．（ ）
| A． |
looks |
B． |
tastes |
C． |
feels |
D． |
sounds |
Your classroom looks so clean and tidy．
Yes，it every day．（ ）
| A． |
cleans |
B． |
is cleaned |
| C． |
cleaned |
D． |
was cleaned |
Don't worry about your daughter， she can look after well．（ ）
| A． |
herself |
B． |
hers |
C． |
her |
D． |
she |