btap nang cao QKD

my friend (give)______ me a bar of chocolate when I (be)_______ at school yesterday.

when we (arrive)_____ at the restaurant, the place (be)_______full.

yesterday, I (walk)____ down the street when It (begin)_____to rain.

Jim (stand)________ under the tree when he (hear)_______ an explosion.

the boy (fall)______ and (hurt) _____himself when he (ride) ______a bicycle.

when we (meet)______ them last year, They (live)______in California.

the tourist (loss)______ his camera while he (walk) ______around the city.

The lorry (go)______ very fast when it (hit)_______ our car.

while I (study)_______in my room, my roommate (have)______ a party in the other room.

first, we (do)_______exercise, and then we (drink)_____some water.