Упражнение 7 :
1. can (означает физическую способность брата плавать)
2. must ( строгое долженствование, иначе не видать хороших оценок в учебе)
3. could (прошедшее время от глагола can, т.к. предложение в прошедшем времени)
4. may (означает разрешение, позволение что-либо сделать)
1)In various sources the length of the Mississippi River is listed in different ways: 3902 km, 3770 km, 3950 km .<span>Read the details on Great Travel
2)</span><span>There were also mysterious disappearance , but later their causes are being investigated. Thus, in December 1976 , " disappeared " freighter giant ' Berge Istra ' displacement of 223,960 tons , a length of 314 m, bulge of the earth under the Liberian flag to Japan with a cargo of Brazilian ore.</span>
1 hello. My name is Willow the which
2 this is my cat
3 is this your house?
4 my house's color is black
5 what's your favorite color?
Приветик)
Правильно : сleaned
Удачки)