The world's population（人口）is getting larger and larger，so scientists are trying to _______ new ways to solve the food problem．（ ）
| A． |
catch up with |
B． |
keep up with |
| C． |
come up with |
D． |
make up with |
— Happy birthday to you, Mary.
— ＿＿＿＿＿
| A． | Have a nice day. |
B． | See you. |
C． | The same to you. |
D． | Thank you. |
—Kevin, what are you doing? Don’t you remember that the doctor warns you not to eat any candy?
—I’m so sorry! I totally forgot about that. I’m so used to eating candy every Halloween that I didn’t remember this year I wasn’t supposed to. ＿＿＿＿＿
| A． | Practice makes perfect. |
B． | When in Rome, do as the Romans do. |
| C． | Old habits die hard. |
D． | Time is money. |
We＿＿＿＿＿a meeting. Come and join in.
| A． | were having |
B． | are having |
C． | had |
D． | have been |
— Hi, Mary. You look tired. ＿＿＿＿＿
— I missed the school bus so I had to run to school this morning.
| A． | What happened? |
B． | What a pain! |
C． | You’re kidding. |
D． | How about you? |
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