If you are worried ______ the problem you should

If fuel tank levels are found to have increased after a grounding, you should suspect ____

If you want to cross the roads safely, you should ______.A．run across itB．wait for the car

If you are with someone who is bitten by an adder you should ______.A．try to catch the add

If you are at a crossing where the traffic has green light, you should ______.A．make sure

If you want to make a cheaper daytime call, you should ______.A．ask the operatorB．change t

If you stay in the same career field, you should______.A．find an alternative job soonB．tak