29. Studies show that the things that contribute most to a______of happiness cannot be bought．
| A．cause | B．thought | C．suggestion | D．Sense |
Do you know when Mr. Brown _______? When he _______ , please let me know.
| A．will come; will come | B．comes; is coming |
| C．is coming; comes | D．comes; will come |
My uncle _____ to see me. He'll be here soon.
| A．comes | B．is coming | C．had come | D．came |
Look out! That tree _____ fall down.
| A．is going to | B．will be | C．shall | D．would |
Everyone likes to live in a house ______ windows face the south.
| A．whose | B．which | C．its | D．and which |
They talked about the persons and things ______ they remembered at school.
| A．which | B．who | C．that | D．whom |