While we __________ to school, we __________ an accident.

A. swim

B. swam

C. swimming

D. to swim

A. for

B. from

C. since

D. until

A. invention

B. discoveries

C. study

D. calls

A. lives

B. live

C. living

D. lived

A. Lan asked Viet if Viet could lend her his ruler.

B. Viet asked whether he could borrow Lan’s ruler.

C. Viet wanted to lend Lan his ruler.

D. Lan wanted to borrow Viet’s ruler.