Howold_______you?I_______ten. A: are...is B: is...am C: are...am D: am...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