我花了大量时间在练钢琴上，但我感到厌烦。
I spent lots of time _____ the piano, but it makes me _________ bored.
然而，他希望将来在中国在制造高科技产品上也会做得更好，人们在世界各地都能买到这样的产品。
However, he hopes that in the future China will also get _____ at making high-technology products _____people can buy in all parts of the world.
我现在快乐多了，而且比以前学习更努力了。
I’m _____ happier now, and I work even harder than I _____ to.
She l_____on the grass, looking up at the high, blue sky. Soon she closed her eyes and fell asleep.
The street in front of my house is covered by colorful fallen tree l_____ every autumn.
Fever, c_____ and headache are the common symptoms(症状) of catching a cold.
