a. People used (1. make)___________fire by (2. rub)________two sticks together.
b. Each July, George together with his family (3. go)___________to Spain for holidays.
c. While I (4. study)___________last night, Fred (5. drop)__________by to visit me.
d. The world (6. change)____________. Things never stay the same
e. The children are late, They (7. not come)__________home from school yet. I hope nothing’s wrong
f. Radium (8. discover)_________by Marie and Pierre Curie in 1898.
a. People used (1. make) to make fire by (2. rub) rubbing two sticks together.
b. Each July, George together with his family (3. go) goes to Spain for holidays.
c. While I (4. study) was studying last night, Fred (5. drop) dropped by to visit me.
d. The world (6. change) is changing . Things never stay the same
e. The children are late, They (7. not come) haven't come home from school yet. I hope nothing’s wrong
f. Radium (8. discover) was discovered by Marie and Pierre Curie in 1898.