Thelittleboydidn’tknow_______.
A、Whichhatishi
B、whichhathisis
C、whichhatwashis
D、whichhathiswas
Nowherebutintheremotestregionofthecountry____findaplacetosettledown.
A、canhe
B、hecan
C、he
D、forhimto
Modern（）perhapscausesmoreproblemsthanitsolves.
A、technique
B、technology
C、tactics
D、tendency
Alltheir__havebeenshownupbytheirowndeeds.
A、debates
B、decorations
C、deductions
D、deceptions
Itisnecessarythatthestudents____moreexcercisestodo.
A、have
B、musthave
C、willhave
D、canhave