It's always difficult being in a foreign country, _____if you don't speak the language.
— I hear that Bai Shan can’t afford his schooling this fall.— ___________, let’s do something for him.
— You can’t enter the building without __________ permission. — I’ve lost __________ permission card.
If you feel tired and sick of fat foods, that is _______ you have to go to the hospital for a medical examination.
Our class _________ all fond of singing English songs and we can sing ________ than others.
To our excitement, two _________ of students __________ a success after three years’ hard work.