He works too hard. That's ______ is wrong with him.
举一反三
- He works too hard. That's ______ is wrong with him.
- He works too hard. That’s ()is wrong with him. A: how B: where C: why D: what
- He works too hard. That’s ________is wrong with him. A: that which B: the what C: what D: that thing what
- He works too hard. That is（）is wrong with him. A: why B: what C: the thing what D: all
- He works too hard. That is______ is wrong with him. A: that which B: that what C: what D: the thing what