It is important to ________ your skin from the harmful strong sunlight.

_______ for your laziness，you could have finished the assignment by now.

Nosoonerhadwereachedhome________aviolentstormbrokeout.

Decision on whether the message is right or wrong should at least come after _____what the message is.

Jennycomplainedthatthehospital________hertoomuchforthetreatment.