Question

Oliver still bought some goldfish ________he found it difficult to raise them.

A．because

B．since

C．though

D．until

Answer 1

C

词义辨析。Because因为；since   自从，因为；though尽管；until直到。句意：Oliver仍然买了一些金鱼尽管他发现饲养它们很难。所以选C。