9. Some girls are _____; a few, but very few, are _____.
He pretended ____________________ (在读书) when I came in. (read)
When he was reading the story, ____________________ (他突然想到一个好主意). (occur)
Many plants and animals ____________________ (危险的). We should take measures to save the endangered animals and plants. (danger)
____________________ (经理不在), we didn't know what to do. (with)
Take an umbrella with you ____________________ (以防下雨). (in case)