The sentence van has come. is grammatically correct if the noun van is the name of a person. A proper noun is not usually preceded by an article. If the noun van' is a common noun, a word for a …

Current ib student taking chemistry, biology and economics at higher level. Looking for help in chemistry, biology and math. Q&a and videos that make learning easy. Math, history, chemistry, algebra, calculus, biology and more. Questions and videos on water pollution, within environmental science

Questions and videos on water pollution, within environmental science