The beautiful (is, are) pleasing, the ugly (A. is B. are) repellent. A: is...is B: are...are

The population of China _____ large and about 80% of the population ______farmers. A: is...is B: are...are C: is...are D: are...is

The first two problems _____very easy, but the rest _____difficult. A: is...are B: is...is C: are...is D: are...are