B
句意:
現(xiàn)在是晚上六點(diǎn)半。該吃晚飯了。
A.吃晚飯 B.晚飯 C.午飯
根據(jù)It's six thirty in the evening現(xiàn)在是晚上六點(diǎn)半,可知,這個(gè)時(shí)間點(diǎn)應(yīng)該是吃晚飯,固定句型It's time for sth.= It's time to do sth.是時(shí)候做某事了??涨盀閒or,可知后跟dinner作賓語(yǔ),have dinner為動(dòng)詞短語(yǔ),故選B。