----- Nội dung dịch tự động từ ảnh -----
6. We usually
(go) to the library three times a week, but last week we
(go)
twice.
(introduce) the telephone in 1876.
(not/ have) time to phone you.
7. Alexander Graham Bell
8. Yesterday I
(be) busy, so I
9. 'What
you
(do) next summer vacation?'
(visit) my grandparents in Nha Trang.
10. Would you like
(come) to dinner tomorrow?
11. The earth
..(circle) the sun once every 365 days.
12. I
.(see) her very often.