They don’t think the problem so far they_______.（ ）
A．have had has been solved
B．have had been solved
C．have to solve been solved
D．have solved has been solved
The glorious moment would live in my mind ______ our football team won the championship．（ ）
A．whenB．whereC．thatD．which
According to the latest BBC news, a five-year-old boy from England ______ the youngest computer specialist in the worl（ ）
A．becameB．becomes
C．had becomeD．has become
- You seem busy these days．
- Yes．I’m writing a story．You know, it’s really not easy to write ______ with attractive plots．（ ）
A．thisB．oneC．itD．that
With doubts ______ through my mind, I felt it necessary to carry out a research．（ ）
A．to runB．run
C．runningD．having run
Every Monday, my English teacher would cheerfully ask me ______ my weekend had been．（ ）
A．thatB．ifC．whatD．how
