Every day the mother seems to be busy until 10 o’clock at night, ____the rest of the family have fallen asleep.
| A．that | B．by which time | C．on time | D．whose time |
.— This is one of the oldest trees in the world.
—_____ such a big tree.
| A．Never I have seen | B．I haven't never seen |
| C．Never have I seen | D．I have seen never |
.When he was a boy, he used to go there and watch _____.
| A．to repair bicycles | B．bicycles to be repaired |
| C．bicycles being repaired | D．repairing bicycles |
Meeting my uncle after all these years was an unforgettable moment, _____ I will always treasure.
| A．that | B．one | C．it | D．what |
.Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
| A．it, it | B．what, what | C．it, what | D．what, it |
. --- What’s the matter with Jason? He looks a bit upset.
--- Didn’t you know? When returning from his holiday last night, he found his house _____.
| A．broken in | B．broken into |
| C．broken out | D．broken down |