单项选择题—If you go to Chile for six months, you'll miss your family and friends.—Yes, but _______.
单项选择题During the examination the students were required to stay in their seats, keep their eyes on their work _________to anyone.
单项选择题_____her phone number, we had some difficulty ______her.
单项选择题_______does business with that fellow is _____to lose money.
单项选择题When she went out, she would disguise herself_________ nobody___________recognize her.