Is Helen here？
Not yet， but she_________in half an hour．（ ）
A．arrivesB．will arrive
C．arrivedD．has arrived
—Sam，_________I join you in the community service？
—Of course you can.（ ）
A．canB．mustC．shouldD．need
—______shall we meet for the picnic？
—At the school gate.（ ）
A．HowB．WhenC．WhyD．Where
Space Day of China falls________ April 24th every year.（ ）
A．onB．byC．atD．in
Mary's birthday is coming.We've decided to make a cake for_________.（ ）
A．himB．herC．youD．them
一What a fantastic song!It brings the good old days back to me.
一_______.I feel the same.
A．Help yourselfB．Take it easy
C．No problemD．That's true