—________was it________ they discovered the entrance to the underground place?

—Totally bychance.

—Don’t you know LiMing will go abroad?

—________, not until you ________ me.

—You must do as Itell you.

—Oh, I must,________ ?

—________ ?

—About half an hour.

—Shall we go andhelp them with their work?

—We’d better not.They said we’d just be ________ if we tried to help.

---Your brother is very careful and honest．

---I agree．What he has just done ________ itself．

—And besides,these colours are more ________ you.

—Do you really think so? I’ll take it, then.

-What do you think made her so sad?

-________．

-A woman answered the phone. I suppose it was his wife.

-It ________ his wife. She has been dead for ages.