It was by reading it a third time _______ Sammy got a thorough understanding of passage E.
222. In Paris nowadays, we may see musicians performing in the streets to ______.
221. There are 5 ________ in the passage about nanometer(纳米) technology we have just read. Please tell me the general meaning of the first one.
220. Mr. Wang was reading ______ on how to learn a foreign language when someone came to see him.
219. I received a postal packet yesterday. Which of the following can replace the underlined word? _____
218. There came a voice of “ ”. She got her ring finger scratched by the bottle opener.