根據(jù)漢語(yǔ)意思完成英文句子。
1. 微波爐可以用來(lái)煮飯。
A microwave oven can _____ _____ _____ cooking.
2. 你必須親自去簽收,他們不能郵寄過(guò)來(lái)就算完事。
You have to go sign for it _____ _____, they can't just mail it.
3. 人類(lèi)怎么會(huì)說(shuō)這么多種語(yǔ)言,這種情況是如何產(chǎn)生的呢?
How did it _____ _____ that humans speak so many different languages?
4. 老師告訴我們?cè)胍魧?duì)我們的耳朵傷害很大。
The teacher told us that noise _____ very _____ _____ our ears.
5. 在每一項(xiàng)發(fā)明被發(fā)明出來(lái)之前,愛(ài)迪生總要做大量的實(shí)驗(yàn)。
Before each invention was invented, Thomas Edison always did _____ _____ _____ _____.