________ he has limited technical knowledge, the old worker has a lot of experience.
There are still many problemsbefore we are ready for a long stay on the Moon.
________ I have a word with you? It won’t take long.
I borrow the book Sherlock Holmes from the library last week,my classmates recommended to me..
Last night, there were millions of people _______ the opening ceremony live on TV.
__ carefully if any change occurs when doing experiments in the lab..