Past Tenses 16. She you a letter three weeks ago.
A) had sent
B) has sent
D) send
E) was sending
C) sent
17. When he homel_him the book.
A) came /shall show
B) comes/showed
C) has come/has shown D) came/showed
E) was coming/shall show
18. They breakfast at 7 and home at eight.
A) have/left
B) had/left
C) had/leave
D) have/leaves E) had/had left
19. Long ago people
A) had known
D) knew
little about those minerals.
B) knowed
C) will know
E) have known
