guizero -Adult Placement Test for English Classes

# guizero -Adult Placement Test for English Classes
from guizero import App, Text,PushButton,Box
app = App(title="Adult Placement Test for English Classes",width = 500,height=800)

score = 0

# Function definitions for your events go here.
def a123():
    score = 0
    if buttonb.text =="A":
        score += 1
    else:
        score += 0
    questionmessage.value = "next Q2"
    buttona.text="next A2"
    buttonb.text="next B2"
    buttonc.text="next C2"
    buttond.text="next D2"
def b123():
    score = 0
    if buttonb.text =="A":
        score += 1
    else:
        score += 0
    questionmessage.value = "next Q2"
    buttona.text="next A2"
    buttonb.text="next B2"
    buttonc.text="next C2"
    buttond.text="next D2"
def c123():
    score = 0
    if buttona.text =="A":
        score += 1
    else:
        score += 0
    buttona.text="next A2"
    buttonb.text="next B2"
    buttonc.text="next C2"
    buttond.text="next D2"
    questionmessage.value = "next Q2"
def d123():
    score = 0
    if buttonb.text =="A":
        score += 1
    questionmessage.value = "next Q2"
    buttona.text="next A2"
    buttonb.text="next B2"
    buttonc.text="next C2"
    buttond.text="next D2"
def next():
    nextbutton.text=score


# Your GUI widgets go here
box_timer =Box(app, width = "fill", border=0,height=50)

box_question=Box(app, width = "fill", border=0,height=200)

box_a=Box(app, width = "fill", border=0,height=80)
box_b=Box(app, width = "fill", border=0,height=80)
box_c=Box(app, width = "fill", border=0,height=80)
box_d=Box(app, width = "fill", border=0,height=80)
box_next=Box(app, width = "fill", border=0,height=50)

timemessage =  Text(box_timer, text="You have 20 minutes left")

questionmessage = Text(box_question, text="I ----- some friends for dinner last night.")
questionmessage.text_size=16
questionmessage.font = "Arial Black"
buttona=PushButton(box_a,text="A",command=a123)
buttonb=PushButton(box_b,text="B",command=b123)
buttonc=PushButton(box_c,text="C",command=c123)
buttond=PushButton(box_d,text="D",command=d123)


nextbutton= PushButton(box_next,text = "Next",command=next)


# Show the GUI on the screen, start listening to events.
app.display()