完成句子。
閱讀下列各小題，根據括號內的漢語提示，用句末括號內的英語單詞完成句子。
1. _____________________ is still a puzzle to us.(lay)
它們什么時候產的卵對于我們仍然是一個謎.
2. Could you tell me ___________________ on marriage when she was young ?(chance)
你能告訴我當她年輕的時候為什么拿她的婚姻冒險嗎?
3. Where is my English dictionary ? It was here a moment ago. Someone _______ by mistake.(take)
我的字典在哪?它剛才在這兒的.肯定有人拿錯了.
4. This morning, as I was working, a man ______ stepped into my shop and begged me for
some money.(dress)
今天早晨,當我正在工作的時候,一個衣衫襤褸的人走進我的商店,向我討錢.
5. I can't imagine _______________ when they received these Christmas presents.(how)
我無法想像當收到這些圣誕禮物時,他們多么激動.
6. It's a small informal party among our old classmates-you _________________ .(need)
這是我們老同學之間的一個小型的非正式的聚會,你不必盛裝打扮.
7. Your words made Tom angry yesterday, so you ________________ to him then.(ought)
昨天你說的話使湯姆生氣,那時你應該向他道歉的.
8. Mr. Smith _____________ by teaching ten years ago and he gained much experience from
his work.(earn)
史密斯先生十年前靠教書謀生,并且從這個工作中獲得很多經驗.
9. The girl as well as her classmates _______ the bird outside the window when their teacher
came in.(stare)
這個女孩和她的同學正凝視著窗外的那只鳥時,他們的老師走進來了.
10. The fact _____________ learning languages delighted his parents very much.(gift)
他在語言學習方面有天賦這一事實使他的父母非常高興.
