1. A: How much is this? 多少钱？ (Duōshǎo qián?)

B: ¥9.6 九元六角。（jiǔ yuán liù jiǎo）or 九块六(毛)。（jiǔ kuài liù máo）

A: That's too expensive! 太贵了。 (Tài guì le)

Can I get it cheaper? 可以便宜一点吗？(Kěyǐ piányi yīdiǎn ma?)

I’m sorry. No. You can’t. 不好意思，不可以。(Bù hǎo yì si, bù kě yǐ)

I don’t want it.  Thank you.我不要了，谢谢。(Wǒ bùyào le, xièxiè.)

2.

3. Quiet! 安静。(Ānjìng!)

Stand up! 站起来！(Zhàn qǐlái!)

Sit down, please！请坐！(Qǐng zuò!)

Look at the teacher/blackboard! 看老师/黑板！( kàn lǎoshī/hēibǎn!)

Listen to the teacher! 听老师说！(Tīng lǎoshī shuō! )

Raise your hands! 举手！(Jǔ shǒu!)

Line up! 排队! (Páiduì!)

4.  A： I’d like to buy 我要买 (Wǒ yào mǎi) toothpaste. 牙膏 (yágāo) 

a toothbrush. 牙刷 (yáshuā) ；soap. 肥皂 (féizào) ；shampoo. 洗发水 (xǐ fǎ shuǐ)；pain-killer. (e.g., aspirin or ibuprofen) 镇痛药 (zhèntòng yào) ；cold medicine. 感冒药 (gǎnmào yào)；stomach medicine. 胃肠药 (wèicháng yào)；an umbrella. 雨伞 (yǔsǎn)；a pen. 笔 (bǐ) ；a pencil. 铅笔 (qiānbǐ)

 How much is this? 多少钱？(Duōshǎo qián?)

B:   ……yuan.

A:   That's too expensive! 太贵了。 (Tài guì le) Can I get it cheaper? 可以便宜一点吗？(Kěyǐ piányi yīdiǎn ma?)

B： I’m sorry. No. You can’t. 不好意思，不可以。(Bù hǎo yì si, bù kě yǐ)

A：I don't want it. Thank you. 我不要了，谢谢。(Wǒ bùyào le, xièxiè)