Twenty ________ ten is thirty. (    )

A．minus

B．plus

C．bus

看图连线。

I’m writing a letter _____ my pen.（   ）

A．with

B．on

C．of

D．on

根据句意，用画线单词的反义词补全句子。
1. —Don’t be late.
—OK, I will be ________.
2. Please don’t come after 4: 00 in the afternoon. Please come ________4: 00.
3. Skating is easy for you, but it is ________for me.
4. You can jump ________. I can jump low.
5. The desk is ________. The chair is light.

Let’s draw a monkey ________ the computer. (   )

A．in

B．on

C．at