She said that the car _____at 40 m.p.h. when it __________to skid.

(TRAVEL, BEGIN)

17. Why________so fast today? You usually _______quite slowly.

(YOU WALK, WALK)

18. This car_______a very strange noise. _______it is all right ?

(MAKE, YOU THINK)

19. It ______ for three days now. The roads will be blocked if it ________

soon.

(SNOW, NOT STOP)