He must pay $100 ____ go to prison.A: or elseB: and elseC: but elseD: if else

The fire alarms are ringing. You must go to the ________. A.bridgeB.holdC.muster station

To make their miles count, members must______.A．pay their membership fees regularlyB．fly o

If you use your Telecard to make a local call you must ______.A．pay salaryB．pay extraC．use

All people must go through security check, _____ airport staff.A: to includeB: includin

If you try to______paying your taxes, you risk going to prison.A．persuadeB．dissuadeC．evade

It ______ last night, for the ground is wet.A、must rainB、must be going to rainC、must hav