请 qǐng 大家 dàjiā 在 zài 答 dā 题 Tí 时 shí , 务必 wùbì 看 kān 清 Qīng 题后在答.

Before answering the questions, you must look at it carefully.

务必 wùbì 把 bǎ 邮票 yóu piào 在 zài 信封 xìnfēng 上 shǎng 贴 tiē 好 hǎo .

Make sure the stamp is properly glued to the envelope.

你 nǐ 务必 wùbì 8点钟 diǎn zhōng 上台 shàng tái 演出 yǎnchū 。

You have to be onstage at eight o'clock.

该 gāi 饭店 fàndiàn 非常 fēicháng 受欢迎 shòu huān yíng ，请 qǐng 务必 wùbì 提前 tíqián 预订 yùdìng 。

Do book ahead as the restaurant is very popular.