By the end of 2025， garbage﹣sorting systems （垃圾分类系统） will be ________in Dongying．（ ）
A．set upB．given up
C．shut offD．brought out
Mr．Li looked for you just now．He seemed to have ________ important to tell you．（ ）
| A． |
nothing |
B． |
anything |
C． |
something |
D． |
everything |
Please stand a little_____________．I'm afraid my ball may hit you．（ ）
| A． |
lower |
B． |
deeper |
C． |
closer |
D． |
farther |
Today many people give out and receive _______________red envelopes（红包）
on mobile phones．（ ）
| A． |
natural |
B． |
electronic |
C． |
national |
D． |
basic |
﹣Is that Mary over there？
﹣No，it _________________be her．She has gone to New York．（ ）
| A． |
shouldn't |
B． |
can't |
C． |
mustn't |
D． |
needn't |
﹣How do you like the song Chengdu？
﹣Oh，I can't stop singing it．Its melody（旋律）__________in my mind all the time．（ ）
| A． |
replies |
B． |
relaxes |
C． |
remains |
D． |
realizes |