He tried to stand on his hands for half an hour, ________ is rather difficult.
A: which
B: what
C: who
D: when
A: which
B: what
C: who
D: when
举一反三
- It is in the village _________ the hero was born, who saved his country when he grew up. A: that B: which C: what D: the place where
- He tried his best to solve the problem, ______ difficult it was.
- When the little son came back to his father _____________. A: [A] he had the other pair of shoes in his hands B: he had only one shoe in his hands C: he had nothing in his hands
- Mary found it difficult to ______ Jim's father when he disapproved of their marriage. A: stand for B: stand out C: stand by D: stand up to
- I have no idea ________ he will be back. A: when B: what C: which D: who