Mary had to go to a meeting，so she left her children ___________ at home.

will you be at the party tonight—Yes, but I have so much homework to dothat I really__________

Haven’t you seen the speed limit sign? Please drive _____ —Sorry, but I have to [ ]

The underlined part in the word “pierced” is pronounced as ________.

They thought my suggestion reasonable _______a few experts to help them.