Poor speaker of English though he was at the time, he still managed to make himself ________.
B
非谓语动词的选用。过去分词作宾语补足语表示被动以及动作的完成。
Bythemiddleofthe21stcentury,thevastmajorityoftheworld’spopulationwillbelivingincities_______inthecountry.
Motivationandpersonalitymay________thevaryingdegreesofsuccessinone’scareer.