【C6】A．adequateB．profitableC．materialD．spiritual

Sometimes it is advisable to book hotels in advance.A．possibleB．profitableC．easyD．wise

Sometimes it is advisable to book hotels in advance.A．possibleB．profitableC．easyD．wise

A．metalB．massC．materialD．model

【C20】A．permanentB．consciousC．subordinateD．spiritual

Sometimes it is advisable to book hotels in advance.A．possibleB．profitableC．easyD．wise

It is advisable to wear sunscreen when out in the sun.A.possibleB.profitableC.easyD.sensib