完成句子：根据所给汉语意思，用单词或短语完成下列英文句子。（共5小题，计10分）我爷爷七十岁了，但看起来依然帅气。
My grandfather is 70, but he still .我们每年三月植树。
We plant trees every year. 如果你不知道事实，请保持沉默。
If you don’t know the truth, please keep . 请访问我们的网站，来购买特别的礼物。
Please visit our website to .多么有用的词典啊！
What they are!
用所给词的适当形式填空。
What an________(embarrass)moment it is！I want to leave the room at once．
根据首字母提示写出所缺的单词。
The sun appeared a________the horizon．
根据首字母提示写出所缺的单词。
The old lady was still breathing．We were surprised to know she wasn’t dead．She was still a________．
用括号中所给词的适当形式填空。
He felt very________(disappoint)because he missed the beginning of the concert．
根据汉语意思完成句子。
Jim is a great player，and he never________his team________(使失望)．