A.Sorry, I have to check my diary
B.That’s exactly what I was going to say
C.I’d love to but I just can’t now
D.That’s true. I understand how you feel

A.My father drives me to school
B.About 20 kilometres
C.About 5 minutes
D.Let me see

A.My father drives me to school
B.About 20 kilometres
C.About 5 minutes
D.Let me see

A.very soon
B.very late
C.very boringly
D.very happily

A.following
B.giving up
C.trying
D.interrupting

A.following
B.giving up
C.trying
D.interrupting

A.ran
B.was running
C.has run
D.had been running

A.
B.
C.
D.

A.\({q_1} > 0\) và \({q_2} > 0\).
B.\({q_l} < 0\) và \({q_2} < 0.\)
C.\({q_1}.\,{q_2} < 0\).
D.\({q_{1.}}.{q_2} > 0\)

A.\(0,44eV\).
B.\(4,56eV\).
C.\(2,28eV\)
D.\(0,22eV\).