试题题干
Fill in the blanks with the words given in brackets. Make changes or add something where necessary.
His secretary 
(constantly forget) to post his letter.
参考答案
试题解析
本题考查时态。constantly“不断的”，一直在做某事，是现在进行时表示现阶段正在进行或从事的动作。
Fill in the blanks with the words given in brackets. Make changes or add something where necessary.
His secretary (constantly forget) to post his letter.
本题考查时态。constantly“不断的”，一直在做某事，是现在进行时表示现阶段正在进行或从事的动作。