The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
–What’s troubling him? ______did Jim look quiet with his friends around. --He’s considering a new project in his company.
Vaccination(接种疫苗) against A H1/N1 flu will begin across Britain next week, _____a sharp increase in the death cases.
It’s believed ______40% of stars, like the sun, may have planets that orbit them.
A scientific report has found that snow and ice on Africa’s highest mountain Kilimanjaro ______rapidly and could vanish within 20 years.
–Frank failed the driving test again. --______ He practiced a lot and was quite confident.