The wallet must LiLei’s. Look! It has his ID card in it.A. beB. belongC. isD. belong to

问题补充：

The wallet must LiLei’s. Look! It has his ID card in it.

A. be

B. belong

C. is

D. belong to

答案：

(答案→)A. be

B. belong

C. is

D. belong to

解析：be 系动词，是；belong属于；is第三人称单数系动词；belong to属于。句意：这个钱包一定是李磊的。看，里面有他的身份证。Belong表示属于时，后面接名词作宾语，根据前文情态动词must可知后面动词用原形，选A。