The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
He saidhis sister had passed the entrance examination of college and _______ she would go to college in about 20 days.
—How unhappy your roommate looks!—Yes, but he's not willing to tell me what it is _______ is troubling him.
In this district for five months or more of the year, no construction can be done _______ the rainy season makes it impossible.
Everything depends on _______ they will support you about it.
She looks more beautiful _____yellow than _______red.