Your experiment reports must be checked with care beforeA.handed them inB.them handing inC

（Be your best). The （worst) disappointment you can experience is （a disappointment) （in) y

The thing you wash your hair with must be________． 查

You can exercise your imagination, but these exercises must be done in accordance with the

—Where is your father？ —He ______ flowers in the garden.A．watersB．must waterC．must be wate

In doing experiments, you must be ______ the precision instruments.A．more than careful wit

The thing you wash your hair with must be______.A