用“√”画出加粗字的正确读音。
抹布(mǒ mā) 抹眼泪(mǒ mā) 哪里(nǎ nà) 那边(nǎ nà)
mā mǒ nǎ nà
描述函数(describing function)
With a lot of difficult problems(),the manager felt worried all the time.
A. settled
B. to be settled
C. settling
D. to settle